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Finding the Fourth Proportional to 7,240.97, 9,990.92 and 4,409.82

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Solution

The fourth proportional to 7,240.97, 9,990.92 and 4,409.82 is: 6,084.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240.97 : 9,990.92 = 4,409.82 : x
  2. Step 2: Convert to fraction form
    7,240.97/9,990.92 = 4,409.82/x
  3. Step 3: Cross multiply
    7,240.97x = 9,990.92 × 4,409.82
  4. Step 4: Simplify right side
    7,240.97x = 44,058,136.79
  5. Step 5: Solve for x
    x = 44,058,136.79/7,240.97
  6. Step 6: Final answer
    x = 6,084.57

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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.