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Finding the Fourth Proportional to 5,048.40, 7,565.40 and 3,721.80

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Solution

The fourth proportional to 5,048.40, 7,565.40 and 3,721.80 is: 5,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,048.40 : 7,565.40 = 3,721.80 : x
  2. Step 2: Convert to fraction form
    5,048.40/7,565.40 = 3,721.80/x
  3. Step 3: Cross multiply
    5,048.40x = 7,565.40 × 3,721.80
  4. Step 4: Simplify right side
    5,048.40x = 28,156,905.72
  5. Step 5: Solve for x
    x = 28,156,905.72/5,048.40
  6. Step 6: Final answer
    x = 5,577.39

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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.