Home / 8,931.16-13,396.88-3,387.12

Finding the Fourth Proportional to 8,931.16, 13,396.88 and 3,387.12

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Solution

The fourth proportional to 8,931.16, 13,396.88 and 3,387.12 is: 5,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.16 : 13,396.88 = 3,387.12 : x
  2. Step 2: Convert to fraction form
    8,931.16/13,396.88 = 3,387.12/x
  3. Step 3: Cross multiply
    8,931.16x = 13,396.88 × 3,387.12
  4. Step 4: Simplify right side
    8,931.16x = 45,376,840.19
  5. Step 5: Solve for x
    x = 45,376,840.19/8,931.16
  6. Step 6: Final answer
    x = 5,080.73

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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.