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Finding the Fourth Proportional to 8,669.62, 13,005.39 and 4,772.02

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Solution

The fourth proportional to 8,669.62, 13,005.39 and 4,772.02 is: 7,158.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.62 : 13,005.39 = 4,772.02 : x
  2. Step 2: Convert to fraction form
    8,669.62/13,005.39 = 4,772.02/x
  3. Step 3: Cross multiply
    8,669.62x = 13,005.39 × 4,772.02
  4. Step 4: Simplify right side
    8,669.62x = 62,061,981.19
  5. Step 5: Solve for x
    x = 62,061,981.19/8,669.62
  6. Step 6: Final answer
    x = 7,158.56

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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.