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Finding the Fourth Proportional to 8,574.86, 12,862.40 and 2,731.52

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Solution

The fourth proportional to 8,574.86, 12,862.40 and 2,731.52 is: 4,097.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.86 : 12,862.40 = 2,731.52 : x
  2. Step 2: Convert to fraction form
    8,574.86/12,862.40 = 2,731.52/x
  3. Step 3: Cross multiply
    8,574.86x = 12,862.40 × 2,731.52
  4. Step 4: Simplify right side
    8,574.86x = 35,133,921.35
  5. Step 5: Solve for x
    x = 35,133,921.35/8,574.86
  6. Step 6: Final answer
    x = 4,097.32

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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.