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Finding the Fourth Proportional to 5,672.28, 7,827.18 and 3,153.78

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Solution

The fourth proportional to 5,672.28, 7,827.18 and 3,153.78 is: 4,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.28 : 7,827.18 = 3,153.78 : x
  2. Step 2: Convert to fraction form
    5,672.28/7,827.18 = 3,153.78/x
  3. Step 3: Cross multiply
    5,672.28x = 7,827.18 × 3,153.78
  4. Step 4: Simplify right side
    5,672.28x = 24,685,203.74
  5. Step 5: Solve for x
    x = 24,685,203.74/5,672.28
  6. Step 6: Final answer
    x = 4,351.90

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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.