Home / 3,140.55-4,333.88-1,724.22

Finding the Fourth Proportional to 3,140.55, 4,333.88 and 1,724.22

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Solution

The fourth proportional to 3,140.55, 4,333.88 and 1,724.22 is: 2,379.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.55 : 4,333.88 = 1,724.22 : x
  2. Step 2: Convert to fraction form
    3,140.55/4,333.88 = 1,724.22/x
  3. Step 3: Cross multiply
    3,140.55x = 4,333.88 × 1,724.22
  4. Step 4: Simplify right side
    3,140.55x = 7,472,553.95
  5. Step 5: Solve for x
    x = 7,472,553.95/3,140.55
  6. Step 6: Final answer
    x = 2,379.38

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Half scale
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Double scale
Find fourth proportional to 3,141.55, 4,335.25 and 1,725.22
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.