Home / 2,330.40-3,216.24-1,447.20

Finding the Fourth Proportional to 2,330.40, 3,216.24 and 1,447.20

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Solution

The fourth proportional to 2,330.40, 3,216.24 and 1,447.20 is: 1,997.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,330.40 : 3,216.24 = 1,447.20 : x
  2. Step 2: Convert to fraction form
    2,330.40/3,216.24 = 1,447.20/x
  3. Step 3: Cross multiply
    2,330.40x = 3,216.24 × 1,447.20
  4. Step 4: Simplify right side
    2,330.40x = 4,654,542.53
  5. Step 5: Solve for x
    x = 4,654,542.53/2,330.40
  6. Step 6: Final answer
    x = 1,997.31

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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.