Home / 8,479.15-12,720.35-2,635.81

Finding the Fourth Proportional to 8,479.15, 12,720.35 and 2,635.81

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Solution

The fourth proportional to 8,479.15, 12,720.35 and 2,635.81 is: 3,954.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.15 : 12,720.35 = 2,635.81 : x
  2. Step 2: Convert to fraction form
    8,479.15/12,720.35 = 2,635.81/x
  3. Step 3: Cross multiply
    8,479.15x = 12,720.35 × 2,635.81
  4. Step 4: Simplify right side
    8,479.15x = 33,528,425.73
  5. Step 5: Solve for x
    x = 33,528,425.73/8,479.15
  6. Step 6: Final answer
    x = 3,954.22

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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.