Home / 2,139.24-3,191.42-2,084.97

Finding the Fourth Proportional to 2,139.24, 3,191.42 and 2,084.97

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Solution

The fourth proportional to 2,139.24, 3,191.42 and 2,084.97 is: 3,110.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.24 : 3,191.42 = 2,084.97 : x
  2. Step 2: Convert to fraction form
    2,139.24/3,191.42 = 2,084.97/x
  3. Step 3: Cross multiply
    2,139.24x = 3,191.42 × 2,084.97
  4. Step 4: Simplify right side
    2,139.24x = 6,654,004.53
  5. Step 5: Solve for x
    x = 6,654,004.53/2,139.24
  6. Step 6: Final answer
    x = 3,110.45

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Find fourth proportional to 1,069.62, 1,595.71 and 1,042.49
Half scale
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Double scale
Find fourth proportional to 2,140.24, 3,192.91 and 2,085.97
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.