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Finding the Fourth Proportional to 4,331.56, 5,978.10 and 2,653.78

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Solution

The fourth proportional to 4,331.56, 5,978.10 and 2,653.78 is: 3,662.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,331.56 : 5,978.10 = 2,653.78 : x
  2. Step 2: Convert to fraction form
    4,331.56/5,978.10 = 2,653.78/x
  3. Step 3: Cross multiply
    4,331.56x = 5,978.10 × 2,653.78
  4. Step 4: Simplify right side
    4,331.56x = 15,864,562.22
  5. Step 5: Solve for x
    x = 15,864,562.22/4,331.56
  6. Step 6: Final answer
    x = 3,662.55

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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.