Home / 9,747.30-13,451.09-5,715.12

Finding the Fourth Proportional to 9,747.30, 13,451.09 and 5,715.12

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Solution

The fourth proportional to 9,747.30, 13,451.09 and 5,715.12 is: 7,886.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,747.30 : 13,451.09 = 5,715.12 : x
  2. Step 2: Convert to fraction form
    9,747.30/13,451.09 = 5,715.12/x
  3. Step 3: Cross multiply
    9,747.30x = 13,451.09 × 5,715.12
  4. Step 4: Simplify right side
    9,747.30x = 76,874,564.91
  5. Step 5: Solve for x
    x = 76,874,564.91/9,747.30
  6. Step 6: Final answer
    x = 7,886.75

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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.