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Finding the Fourth Proportional to 4,575.26, 6,864.89 and 1,979.90

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Solution

The fourth proportional to 4,575.26, 6,864.89 and 1,979.90 is: 2,970.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,575.26 : 6,864.89 = 1,979.90 : x
  2. Step 2: Convert to fraction form
    4,575.26/6,864.89 = 1,979.90/x
  3. Step 3: Cross multiply
    4,575.26x = 6,864.89 × 1,979.90
  4. Step 4: Simplify right side
    4,575.26x = 13,591,795.71
  5. Step 5: Solve for x
    x = 13,591,795.71/4,575.26
  6. Step 6: Final answer
    x = 2,970.72

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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.