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Finding the Fourth Proportional to 4,900.32, 7,340.49 and 2,921.22

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Solution

The fourth proportional to 4,900.32, 7,340.49 and 2,921.22 is: 4,375.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,900.32 : 7,340.49 = 2,921.22 : x
  2. Step 2: Convert to fraction form
    4,900.32/7,340.49 = 2,921.22/x
  3. Step 3: Cross multiply
    4,900.32x = 7,340.49 × 2,921.22
  4. Step 4: Simplify right side
    4,900.32x = 21,443,186.20
  5. Step 5: Solve for x
    x = 21,443,186.20/4,900.32
  6. Step 6: Final answer
    x = 4,375.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.