Home / 8,112.68-12,170.28-2,565.49

Finding the Fourth Proportional to 8,112.68, 12,170.28 and 2,565.49

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Solution

The fourth proportional to 8,112.68, 12,170.28 and 2,565.49 is: 3,848.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.68 : 12,170.28 = 2,565.49 : x
  2. Step 2: Convert to fraction form
    8,112.68/12,170.28 = 2,565.49/x
  3. Step 3: Cross multiply
    8,112.68x = 12,170.28 × 2,565.49
  4. Step 4: Simplify right side
    8,112.68x = 31,222,742.04
  5. Step 5: Solve for x
    x = 31,222,742.04/8,112.68
  6. Step 6: Final answer
    x = 3,848.64

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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.