Home / 7,139.26-9,852.19-3,995.45

Finding the Fourth Proportional to 7,139.26, 9,852.19 and 3,995.45

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Solution

The fourth proportional to 7,139.26, 9,852.19 and 3,995.45 is: 5,513.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.26 : 9,852.19 = 3,995.45 : x
  2. Step 2: Convert to fraction form
    7,139.26/9,852.19 = 3,995.45/x
  3. Step 3: Cross multiply
    7,139.26x = 9,852.19 × 3,995.45
  4. Step 4: Simplify right side
    7,139.26x = 39,363,873.29
  5. Step 5: Solve for x
    x = 39,363,873.29/7,139.26
  6. Step 6: Final answer
    x = 5,513.72

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Half scale
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Double scale
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Similar ratio
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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.