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Finding the Fourth Proportional to 8,565.10, 11,819.18 and 5,207.45

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Solution

The fourth proportional to 8,565.10, 11,819.18 and 5,207.45 is: 7,185.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.10 : 11,819.18 = 5,207.45 : x
  2. Step 2: Convert to fraction form
    8,565.10/11,819.18 = 5,207.45/x
  3. Step 3: Cross multiply
    8,565.10x = 11,819.18 × 5,207.45
  4. Step 4: Simplify right side
    8,565.10x = 61,547,729.80
  5. Step 5: Solve for x
    x = 61,547,729.80/8,565.10
  6. Step 6: Final answer
    x = 7,185.88

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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.