Home / 8,431.41-12,648.96-2,587.89

Finding the Fourth Proportional to 8,431.41, 12,648.96 and 2,587.89

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Solution

The fourth proportional to 8,431.41, 12,648.96 and 2,587.89 is: 3,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.41 : 12,648.96 = 2,587.89 : x
  2. Step 2: Convert to fraction form
    8,431.41/12,648.96 = 2,587.89/x
  3. Step 3: Cross multiply
    8,431.41x = 12,648.96 × 2,587.89
  4. Step 4: Simplify right side
    8,431.41x = 32,734,117.09
  5. Step 5: Solve for x
    x = 32,734,117.09/8,431.41
  6. Step 6: Final answer
    x = 3,882.40

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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.