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Finding the Fourth Proportional to 5,659.30, 8,476.80 and 4,687.30

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Solution

The fourth proportional to 5,659.30, 8,476.80 and 4,687.30 is: 7,020.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,659.30 : 8,476.80 = 4,687.30 : x
  2. Step 2: Convert to fraction form
    5,659.30/8,476.80 = 4,687.30/x
  3. Step 3: Cross multiply
    5,659.30x = 8,476.80 × 4,687.30
  4. Step 4: Simplify right side
    5,659.30x = 39,733,304.64
  5. Step 5: Solve for x
    x = 39,733,304.64/5,659.30
  6. Step 6: Final answer
    x = 7,020.89

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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.