Home / 2,449.79-3,380.75-1,330.76

Finding the Fourth Proportional to 2,449.79, 3,380.75 and 1,330.76

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Solution

The fourth proportional to 2,449.79, 3,380.75 and 1,330.76 is: 1,836.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,449.79 : 3,380.75 = 1,330.76 : x
  2. Step 2: Convert to fraction form
    2,449.79/3,380.75 = 1,330.76/x
  3. Step 3: Cross multiply
    2,449.79x = 3,380.75 × 1,330.76
  4. Step 4: Simplify right side
    2,449.79x = 4,498,943.31
  5. Step 5: Solve for x
    x = 4,498,943.31/2,449.79
  6. Step 6: Final answer
    x = 1,836.46

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Half scale
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Double scale
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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.