Home / 9,107.12-12,569.43-8,691.59

Finding the Fourth Proportional to 9,107.12, 12,569.43 and 8,691.59

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Solution

The fourth proportional to 9,107.12, 12,569.43 and 8,691.59 is: 11,995.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.12 : 12,569.43 = 8,691.59 : x
  2. Step 2: Convert to fraction form
    9,107.12/12,569.43 = 8,691.59/x
  3. Step 3: Cross multiply
    9,107.12x = 12,569.43 × 8,691.59
  4. Step 4: Simplify right side
    9,107.12x = 109,248,269.25
  5. Step 5: Solve for x
    x = 109,248,269.25/9,107.12
  6. Step 6: Final answer
    x = 11,995.93

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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.