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Finding the Fourth Proportional to 3,128.94, 4,691.19 and 1,567.83

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Solution

The fourth proportional to 3,128.94, 4,691.19 and 1,567.83 is: 2,350.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.94 : 4,691.19 = 1,567.83 : x
  2. Step 2: Convert to fraction form
    3,128.94/4,691.19 = 1,567.83/x
  3. Step 3: Cross multiply
    3,128.94x = 4,691.19 × 1,567.83
  4. Step 4: Simplify right side
    3,128.94x = 7,354,988.42
  5. Step 5: Solve for x
    x = 7,354,988.42/3,128.94
  6. Step 6: Final answer
    x = 2,350.63

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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.