Home / 8,691.10-13,036.56-2,117.29

Finding the Fourth Proportional to 8,691.10, 13,036.56 and 2,117.29

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Solution

The fourth proportional to 8,691.10, 13,036.56 and 2,117.29 is: 3,175.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.10 : 13,036.56 = 2,117.29 : x
  2. Step 2: Convert to fraction form
    8,691.10/13,036.56 = 2,117.29/x
  3. Step 3: Cross multiply
    8,691.10x = 13,036.56 × 2,117.29
  4. Step 4: Simplify right side
    8,691.10x = 27,602,178.12
  5. Step 5: Solve for x
    x = 27,602,178.12/8,691.10
  6. Step 6: Final answer
    x = 3,175.91

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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.