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Finding the Fourth Proportional to 2,432.58, 3,648.51 and 872.34

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Solution

The fourth proportional to 2,432.58, 3,648.51 and 872.34 is: 1,308.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,432.58 : 3,648.51 = 872.34 : x
  2. Step 2: Convert to fraction form
    2,432.58/3,648.51 = 872.34/x
  3. Step 3: Cross multiply
    2,432.58x = 3,648.51 × 872.34
  4. Step 4: Simplify right side
    2,432.58x = 3,182,741.21
  5. Step 5: Solve for x
    x = 3,182,741.21/2,432.58
  6. Step 6: Final answer
    x = 1,308.38

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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.