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Finding the Fourth Proportional to 8,565.43, 12,848.15 and 3,019.20

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Solution

The fourth proportional to 8,565.43, 12,848.15 and 3,019.20 is: 4,528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.43 : 12,848.15 = 3,019.20 : x
  2. Step 2: Convert to fraction form
    8,565.43/12,848.15 = 3,019.20/x
  3. Step 3: Cross multiply
    8,565.43x = 12,848.15 × 3,019.20
  4. Step 4: Simplify right side
    8,565.43x = 38,791,134.48
  5. Step 5: Solve for x
    x = 38,791,134.48/8,565.43
  6. Step 6: Final answer
    x = 4,528.80

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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.