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Finding the Fourth Proportional to 1,671.12, 2,306.16 and 925.11

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Solution

The fourth proportional to 1,671.12, 2,306.16 and 925.11 is: 1,276.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.12 : 2,306.16 = 925.11 : x
  2. Step 2: Convert to fraction form
    1,671.12/2,306.16 = 925.11/x
  3. Step 3: Cross multiply
    1,671.12x = 2,306.16 × 925.11
  4. Step 4: Simplify right side
    1,671.12x = 2,133,451.68
  5. Step 5: Solve for x
    x = 2,133,451.68/1,671.12
  6. Step 6: Final answer
    x = 1,276.66

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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.