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Finding the Fourth Proportional to 2,671.21, 4,006.71 and 723.46

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Solution

The fourth proportional to 2,671.21, 4,006.71 and 723.46 is: 1,085.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,671.21 : 4,006.71 = 723.46 : x
  2. Step 2: Convert to fraction form
    2,671.21/4,006.71 = 723.46/x
  3. Step 3: Cross multiply
    2,671.21x = 4,006.71 × 723.46
  4. Step 4: Simplify right side
    2,671.21x = 2,898,694.42
  5. Step 5: Solve for x
    x = 2,898,694.42/2,671.21
  6. Step 6: Final answer
    x = 1,085.16

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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.