Home / 8,078.79-12,118.20-2,456.51

Finding the Fourth Proportional to 8,078.79, 12,118.20 and 2,456.51

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Solution

The fourth proportional to 8,078.79, 12,118.20 and 2,456.51 is: 3,684.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.79 : 12,118.20 = 2,456.51 : x
  2. Step 2: Convert to fraction form
    8,078.79/12,118.20 = 2,456.51/x
  3. Step 3: Cross multiply
    8,078.79x = 12,118.20 × 2,456.51
  4. Step 4: Simplify right side
    8,078.79x = 29,768,406.61
  5. Step 5: Solve for x
    x = 29,768,406.61/8,078.79
  6. Step 6: Final answer
    x = 3,684.76

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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.