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Finding the Fourth Proportional to 8,710.02, 12,019.87 and 4,731.20

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Solution

The fourth proportional to 8,710.02, 12,019.87 and 4,731.20 is: 6,529.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.02 : 12,019.87 = 4,731.20 : x
  2. Step 2: Convert to fraction form
    8,710.02/12,019.87 = 4,731.20/x
  3. Step 3: Cross multiply
    8,710.02x = 12,019.87 × 4,731.20
  4. Step 4: Simplify right side
    8,710.02x = 56,868,385.29
  5. Step 5: Solve for x
    x = 56,868,385.29/8,710.02
  6. Step 6: Final answer
    x = 6,529.08

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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.