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Finding the Fourth Proportional to 5,648.40, 8,472.60 and 4,416.80

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Solution

The fourth proportional to 5,648.40, 8,472.60 and 4,416.80 is: 6,625.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,648.40 : 8,472.60 = 4,416.80 : x
  2. Step 2: Convert to fraction form
    5,648.40/8,472.60 = 4,416.80/x
  3. Step 3: Cross multiply
    5,648.40x = 8,472.60 × 4,416.80
  4. Step 4: Simplify right side
    5,648.40x = 37,421,737.32
  5. Step 5: Solve for x
    x = 37,421,737.32/5,648.40
  6. Step 6: Final answer
    x = 6,625.19

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Similar ratio
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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.