Home / 3,712.76-5,548.61-2,978.90

Finding the Fourth Proportional to 3,712.76, 5,548.61 and 2,978.90

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Solution

The fourth proportional to 3,712.76, 5,548.61 and 2,978.90 is: 4,451.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.76 : 5,548.61 = 2,978.90 : x
  2. Step 2: Convert to fraction form
    3,712.76/5,548.61 = 2,978.90/x
  3. Step 3: Cross multiply
    3,712.76x = 5,548.61 × 2,978.90
  4. Step 4: Simplify right side
    3,712.76x = 16,528,754.33
  5. Step 5: Solve for x
    x = 16,528,754.33/3,712.76
  6. Step 6: Final answer
    x = 4,451.88

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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.