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Finding the Fourth Proportional to 7,240.40, 9,992.04 and 4,446.80

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Solution

The fourth proportional to 7,240.40, 9,992.04 and 4,446.80 is: 6,136.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240.40 : 9,992.04 = 4,446.80 : x
  2. Step 2: Convert to fraction form
    7,240.40/9,992.04 = 4,446.80/x
  3. Step 3: Cross multiply
    7,240.40x = 9,992.04 × 4,446.80
  4. Step 4: Simplify right side
    7,240.40x = 44,432,603.47
  5. Step 5: Solve for x
    x = 44,432,603.47/7,240.40
  6. Step 6: Final answer
    x = 6,136.76

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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.