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Finding the Fourth Proportional to 1,352.64, 1,867.26 and 974.88

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Solution

The fourth proportional to 1,352.64, 1,867.26 and 974.88 is: 1,345.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.64 : 1,867.26 = 974.88 : x
  2. Step 2: Convert to fraction form
    1,352.64/1,867.26 = 974.88/x
  3. Step 3: Cross multiply
    1,352.64x = 1,867.26 × 974.88
  4. Step 4: Simplify right side
    1,352.64x = 1,820,354.43
  5. Step 5: Solve for x
    x = 1,820,354.43/1,352.64
  6. Step 6: Final answer
    x = 1,345.78

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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.