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Finding the Fourth Proportional to 4,737.60, 7,102.08 and 1,815.12

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Solution

The fourth proportional to 4,737.60, 7,102.08 and 1,815.12 is: 2,721.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,737.60 : 7,102.08 = 1,815.12 : x
  2. Step 2: Convert to fraction form
    4,737.60/7,102.08 = 1,815.12/x
  3. Step 3: Cross multiply
    4,737.60x = 7,102.08 × 1,815.12
  4. Step 4: Simplify right side
    4,737.60x = 12,891,127.45
  5. Step 5: Solve for x
    x = 12,891,127.45/4,737.60
  6. Step 6: Final answer
    x = 2,721.02

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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.