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Finding the Fourth Proportional to 8,710.19, 12,019.97 and 4,731.29

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Solution

The fourth proportional to 8,710.19, 12,019.97 and 4,731.29 is: 6,529.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.19 : 12,019.97 = 4,731.29 : x
  2. Step 2: Convert to fraction form
    8,710.19/12,019.97 = 4,731.29/x
  3. Step 3: Cross multiply
    8,710.19x = 12,019.97 × 4,731.29
  4. Step 4: Simplify right side
    8,710.19x = 56,869,880.11
  5. Step 5: Solve for x
    x = 56,869,880.11/8,710.19
  6. Step 6: Final answer
    x = 6,529.12

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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.