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Finding the Fourth Proportional to 8,710.10, 12,020.05 and 4,731.28

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Solution

The fourth proportional to 8,710.10, 12,020.05 and 4,731.28 is: 6,529.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.10 : 12,020.05 = 4,731.28 : x
  2. Step 2: Convert to fraction form
    8,710.10/12,020.05 = 4,731.28/x
  3. Step 3: Cross multiply
    8,710.10x = 12,020.05 × 4,731.28
  4. Step 4: Simplify right side
    8,710.10x = 56,870,171.41
  5. Step 5: Solve for x
    x = 56,870,171.41/8,710.10
  6. Step 6: Final answer
    x = 6,529.22

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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.