Home / 8,431.42-12,646.82-2,587.88

Finding the Fourth Proportional to 8,431.42, 12,646.82 and 2,587.88

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Solution

The fourth proportional to 8,431.42, 12,646.82 and 2,587.88 is: 3,881.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.42 : 12,646.82 = 2,587.88 : x
  2. Step 2: Convert to fraction form
    8,431.42/12,646.82 = 2,587.88/x
  3. Step 3: Cross multiply
    8,431.42x = 12,646.82 × 2,587.88
  4. Step 4: Simplify right side
    8,431.42x = 32,728,452.54
  5. Step 5: Solve for x
    x = 32,728,452.54/8,431.42
  6. Step 6: Final answer
    x = 3,881.72

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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.