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Finding the Fourth Proportional to 5,648.60, 8,472.90 and 3,680.30

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Solution

The fourth proportional to 5,648.60, 8,472.90 and 3,680.30 is: 5,520.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,648.60 : 8,472.90 = 3,680.30 : x
  2. Step 2: Convert to fraction form
    5,648.60/8,472.90 = 3,680.30/x
  3. Step 3: Cross multiply
    5,648.60x = 8,472.90 × 3,680.30
  4. Step 4: Simplify right side
    5,648.60x = 31,182,813.87
  5. Step 5: Solve for x
    x = 31,182,813.87/5,648.60
  6. Step 6: Final answer
    x = 5,520.45

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1.5x scale

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.