Home / 8,478.15-12,718.85-2,634.81

Finding the Fourth Proportional to 8,478.15, 12,718.85 and 2,634.81

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Solution

The fourth proportional to 8,478.15, 12,718.85 and 2,634.81 is: 3,952.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.15 : 12,718.85 = 2,634.81 : x
  2. Step 2: Convert to fraction form
    8,478.15/12,718.85 = 2,634.81/x
  3. Step 3: Cross multiply
    8,478.15x = 12,718.85 × 2,634.81
  4. Step 4: Simplify right side
    8,478.15x = 33,511,739.99
  5. Step 5: Solve for x
    x = 33,511,739.99/8,478.15
  6. Step 6: Final answer
    x = 3,952.72

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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.