Home / 8,931.12-13,396.74-2,691.18

Finding the Fourth Proportional to 8,931.12, 13,396.74 and 2,691.18

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Solution

The fourth proportional to 8,931.12, 13,396.74 and 2,691.18 is: 4,036.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.12 : 13,396.74 = 2,691.18 : x
  2. Step 2: Convert to fraction form
    8,931.12/13,396.74 = 2,691.18/x
  3. Step 3: Cross multiply
    8,931.12x = 13,396.74 × 2,691.18
  4. Step 4: Simplify right side
    8,931.12x = 36,053,038.75
  5. Step 5: Solve for x
    x = 36,053,038.75/8,931.12
  6. Step 6: Final answer
    x = 4,036.79

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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.