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Finding the Fourth Proportional to 6,605.53, 9,121.80 and 4,251.76

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Solution

The fourth proportional to 6,605.53, 9,121.80 and 4,251.76 is: 5,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,605.53 : 9,121.80 = 4,251.76 : x
  2. Step 2: Convert to fraction form
    6,605.53/9,121.80 = 4,251.76/x
  3. Step 3: Cross multiply
    6,605.53x = 9,121.80 × 4,251.76
  4. Step 4: Simplify right side
    6,605.53x = 38,783,704.37
  5. Step 5: Solve for x
    x = 38,783,704.37/6,605.53
  6. Step 6: Final answer
    x = 5,871.40

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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.