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Finding the Fourth Proportional to 7,201.06, 9,937.47 and 3,889.06

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Solution

The fourth proportional to 7,201.06, 9,937.47 and 3,889.06 is: 5,366.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,201.06 : 9,937.47 = 3,889.06 : x
  2. Step 2: Convert to fraction form
    7,201.06/9,937.47 = 3,889.06/x
  3. Step 3: Cross multiply
    7,201.06x = 9,937.47 × 3,889.06
  4. Step 4: Simplify right side
    7,201.06x = 38,647,432.20
  5. Step 5: Solve for x
    x = 38,647,432.20/7,201.06
  6. Step 6: Final answer
    x = 5,366.91

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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.