Home / 5,240.78-7,232.62-3,115.74

Finding the Fourth Proportional to 5,240.78, 7,232.62 and 3,115.74

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Solution

The fourth proportional to 5,240.78, 7,232.62 and 3,115.74 is: 4,299.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.78 : 7,232.62 = 3,115.74 : x
  2. Step 2: Convert to fraction form
    5,240.78/7,232.62 = 3,115.74/x
  3. Step 3: Cross multiply
    5,240.78x = 7,232.62 × 3,115.74
  4. Step 4: Simplify right side
    5,240.78x = 22,534,963.44
  5. Step 5: Solve for x
    x = 22,534,963.44/5,240.78
  6. Step 6: Final answer
    x = 4,299.93

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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.