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Finding the Fourth Proportional to 2,672.51, 4,008.77 and 724.71

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Solution

The fourth proportional to 2,672.51, 4,008.77 and 724.71 is: 1,087.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.51 : 4,008.77 = 724.71 : x
  2. Step 2: Convert to fraction form
    2,672.51/4,008.77 = 724.71/x
  3. Step 3: Cross multiply
    2,672.51x = 4,008.77 × 724.71
  4. Step 4: Simplify right side
    2,672.51x = 2,905,195.71
  5. Step 5: Solve for x
    x = 2,905,195.71/2,672.51
  6. Step 6: Final answer
    x = 1,087.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.