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Finding the Fourth Proportional to 5,672.13, 7,827.39 and 3,154.25

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Solution

The fourth proportional to 5,672.13, 7,827.39 and 3,154.25 is: 4,352.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.13 : 7,827.39 = 3,154.25 : x
  2. Step 2: Convert to fraction form
    5,672.13/7,827.39 = 3,154.25/x
  3. Step 3: Cross multiply
    5,672.13x = 7,827.39 × 3,154.25
  4. Step 4: Simplify right side
    5,672.13x = 24,689,505.77
  5. Step 5: Solve for x
    x = 24,689,505.77/5,672.13
  6. Step 6: Final answer
    x = 4,352.78

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1.5x scale

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.