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Finding the Fourth Proportional to 1,957.11, 2,700.71 and 1,072.91

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Solution

The fourth proportional to 1,957.11, 2,700.71 and 1,072.91 is: 1,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957.11 : 2,700.71 = 1,072.91 : x
  2. Step 2: Convert to fraction form
    1,957.11/2,700.71 = 1,072.91/x
  3. Step 3: Cross multiply
    1,957.11x = 2,700.71 × 1,072.91
  4. Step 4: Simplify right side
    1,957.11x = 2,897,599.90
  5. Step 5: Solve for x
    x = 2,897,599.90/1,957.11
  6. Step 6: Final answer
    x = 1,480.55

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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.