Home / 8,431.89-12,648.84-2,587.74

Finding the Fourth Proportional to 8,431.89, 12,648.84 and 2,587.74

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Solution

The fourth proportional to 8,431.89, 12,648.84 and 2,587.74 is: 3,881.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.89 : 12,648.84 = 2,587.74 : x
  2. Step 2: Convert to fraction form
    8,431.89/12,648.84 = 2,587.74/x
  3. Step 3: Cross multiply
    8,431.89x = 12,648.84 × 2,587.74
  4. Step 4: Simplify right side
    8,431.89x = 32,731,909.22
  5. Step 5: Solve for x
    x = 32,731,909.22/8,431.89
  6. Step 6: Final answer
    x = 3,881.92

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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.