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Finding the Fourth Proportional to 7,144.92, 9,859.98 and 4,001.10

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Solution

The fourth proportional to 7,144.92, 9,859.98 and 4,001.10 is: 5,521.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.92 : 9,859.98 = 4,001.10 : x
  2. Step 2: Convert to fraction form
    7,144.92/9,859.98 = 4,001.10/x
  3. Step 3: Cross multiply
    7,144.92x = 9,859.98 × 4,001.10
  4. Step 4: Simplify right side
    7,144.92x = 39,450,765.98
  5. Step 5: Solve for x
    x = 39,450,765.98/7,144.92
  6. Step 6: Final answer
    x = 5,521.51

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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.