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Finding the Fourth Proportional to 1,851.88, 2,772.76 and 1,332.40

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Solution

The fourth proportional to 1,851.88, 2,772.76 and 1,332.40 is: 1,994.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.88 : 2,772.76 = 1,332.40 : x
  2. Step 2: Convert to fraction form
    1,851.88/2,772.76 = 1,332.40/x
  3. Step 3: Cross multiply
    1,851.88x = 2,772.76 × 1,332.40
  4. Step 4: Simplify right side
    1,851.88x = 3,694,425.42
  5. Step 5: Solve for x
    x = 3,694,425.42/1,851.88
  6. Step 6: Final answer
    x = 1,994.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.