Home / 3,515.32-5,272.96-918.25

Finding the Fourth Proportional to 3,515.32, 5,272.96 and 918.25

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Solution

The fourth proportional to 3,515.32, 5,272.96 and 918.25 is: 1,377.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.32 : 5,272.96 = 918.25 : x
  2. Step 2: Convert to fraction form
    3,515.32/5,272.96 = 918.25/x
  3. Step 3: Cross multiply
    3,515.32x = 5,272.96 × 918.25
  4. Step 4: Simplify right side
    3,515.32x = 4,841,895.52
  5. Step 5: Solve for x
    x = 4,841,895.52/3,515.32
  6. Step 6: Final answer
    x = 1,377.37

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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.