Home / 4,240.62-6,331.50-3,978.18

Finding the Fourth Proportional to 4,240.62, 6,331.50 and 3,978.18

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Solution

The fourth proportional to 4,240.62, 6,331.50 and 3,978.18 is: 5,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,240.62 : 6,331.50 = 3,978.18 : x
  2. Step 2: Convert to fraction form
    4,240.62/6,331.50 = 3,978.18/x
  3. Step 3: Cross multiply
    4,240.62x = 6,331.50 × 3,978.18
  4. Step 4: Simplify right side
    4,240.62x = 25,187,846.67
  5. Step 5: Solve for x
    x = 25,187,846.67/4,240.62
  6. Step 6: Final answer
    x = 5,939.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.