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Finding the Fourth Proportional to 8,710.51, 12,020.75 and 4,731.87

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Solution

The fourth proportional to 8,710.51, 12,020.75 and 4,731.87 is: 6,530.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.51 : 12,020.75 = 4,731.87 : x
  2. Step 2: Convert to fraction form
    8,710.51/12,020.75 = 4,731.87/x
  3. Step 3: Cross multiply
    8,710.51x = 12,020.75 × 4,731.87
  4. Step 4: Simplify right side
    8,710.51x = 56,880,626.30
  5. Step 5: Solve for x
    x = 56,880,626.30/8,710.51
  6. Step 6: Final answer
    x = 6,530.11

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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.