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Finding the Fourth Proportional to 2,672.32, 3,687.12 and 1,624.40

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Solution

The fourth proportional to 2,672.32, 3,687.12 and 1,624.40 is: 2,241.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.32 : 3,687.12 = 1,624.40 : x
  2. Step 2: Convert to fraction form
    2,672.32/3,687.12 = 1,624.40/x
  3. Step 3: Cross multiply
    2,672.32x = 3,687.12 × 1,624.40
  4. Step 4: Simplify right side
    2,672.32x = 5,989,357.73
  5. Step 5: Solve for x
    x = 5,989,357.73/2,672.32
  6. Step 6: Final answer
    x = 2,241.26

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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.