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Finding the Fourth Proportional to 2,392.80, 3,301.72 and 1,330.48

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Solution

The fourth proportional to 2,392.80, 3,301.72 and 1,330.48 is: 1,835.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,392.80 : 3,301.72 = 1,330.48 : x
  2. Step 2: Convert to fraction form
    2,392.80/3,301.72 = 1,330.48/x
  3. Step 3: Cross multiply
    2,392.80x = 3,301.72 × 1,330.48
  4. Step 4: Simplify right side
    2,392.80x = 4,392,872.43
  5. Step 5: Solve for x
    x = 4,392,872.43/2,392.80
  6. Step 6: Final answer
    x = 1,835.87

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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.