Home / 5,239.16-7,231.85-3,143.28

Finding the Fourth Proportional to 5,239.16, 7,231.85 and 3,143.28

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Solution

The fourth proportional to 5,239.16, 7,231.85 and 3,143.28 is: 4,338.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.16 : 7,231.85 = 3,143.28 : x
  2. Step 2: Convert to fraction form
    5,239.16/7,231.85 = 3,143.28/x
  3. Step 3: Cross multiply
    5,239.16x = 7,231.85 × 3,143.28
  4. Step 4: Simplify right side
    5,239.16x = 22,731,752.66
  5. Step 5: Solve for x
    x = 22,731,752.66/5,239.16
  6. Step 6: Final answer
    x = 4,338.82

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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.