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Finding the Fourth Proportional to 7,433.70, 11,156.70 and 5,578.85

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Solution

The fourth proportional to 7,433.70, 11,156.70 and 5,578.85 is: 8,372.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,433.70 : 11,156.70 = 5,578.85 : x
  2. Step 2: Convert to fraction form
    7,433.70/11,156.70 = 5,578.85/x
  3. Step 3: Cross multiply
    7,433.70x = 11,156.70 × 5,578.85
  4. Step 4: Simplify right side
    7,433.70x = 62,241,549.69
  5. Step 5: Solve for x
    x = 62,241,549.69/7,433.70
  6. Step 6: Final answer
    x = 8,372.89

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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.