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Finding the Fourth Proportional to 1,671.57, 2,306.88 and 972.95

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Solution

The fourth proportional to 1,671.57, 2,306.88 and 972.95 is: 1,342.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.57 : 2,306.88 = 972.95 : x
  2. Step 2: Convert to fraction form
    1,671.57/2,306.88 = 972.95/x
  3. Step 3: Cross multiply
    1,671.57x = 2,306.88 × 972.95
  4. Step 4: Simplify right side
    1,671.57x = 2,244,467.36
  5. Step 5: Solve for x
    x = 2,244,467.36/1,671.57
  6. Step 6: Final answer
    x = 1,342.73

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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.