Home / 2,499.66-3,449.57-1,380.74

Finding the Fourth Proportional to 2,499.66, 3,449.57 and 1,380.74

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Solution

The fourth proportional to 2,499.66, 3,449.57 and 1,380.74 is: 1,905.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,499.66 : 3,449.57 = 1,380.74 : x
  2. Step 2: Convert to fraction form
    2,499.66/3,449.57 = 1,380.74/x
  3. Step 3: Cross multiply
    2,499.66x = 3,449.57 × 1,380.74
  4. Step 4: Simplify right side
    2,499.66x = 4,762,935.13
  5. Step 5: Solve for x
    x = 4,762,935.13/2,499.66
  6. Step 6: Final answer
    x = 1,905.43

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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.