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Finding the Fourth Proportional to 3,898.64, 5,847.25 and 1,124.63

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Solution

The fourth proportional to 3,898.64, 5,847.25 and 1,124.63 is: 1,686.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.64 : 5,847.25 = 1,124.63 : x
  2. Step 2: Convert to fraction form
    3,898.64/5,847.25 = 1,124.63/x
  3. Step 3: Cross multiply
    3,898.64x = 5,847.25 × 1,124.63
  4. Step 4: Simplify right side
    3,898.64x = 6,575,988.27
  5. Step 5: Solve for x
    x = 6,575,988.27/3,898.64
  6. Step 6: Final answer
    x = 1,686.74

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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.