Home / 5,239.30-7,229.64-2,881.30

Finding the Fourth Proportional to 5,239.30, 7,229.64 and 2,881.30

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Solution

The fourth proportional to 5,239.30, 7,229.64 and 2,881.30 is: 3,975.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.30 : 7,229.64 = 2,881.30 : x
  2. Step 2: Convert to fraction form
    5,239.30/7,229.64 = 2,881.30/x
  3. Step 3: Cross multiply
    5,239.30x = 7,229.64 × 2,881.30
  4. Step 4: Simplify right side
    5,239.30x = 20,830,761.73
  5. Step 5: Solve for x
    x = 20,830,761.73/5,239.30
  6. Step 6: Final answer
    x = 3,975.87

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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.