Home / 3,515.32-5,272.98-918.26

Finding the Fourth Proportional to 3,515.32, 5,272.98 and 918.26

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Solution

The fourth proportional to 3,515.32, 5,272.98 and 918.26 is: 1,377.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.32 : 5,272.98 = 918.26 : x
  2. Step 2: Convert to fraction form
    3,515.32/5,272.98 = 918.26/x
  3. Step 3: Cross multiply
    3,515.32x = 5,272.98 × 918.26
  4. Step 4: Simplify right side
    3,515.32x = 4,841,966.61
  5. Step 5: Solve for x
    x = 4,841,966.61/3,515.32
  6. Step 6: Final answer
    x = 1,377.39

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.