Home / 8,326.32-12,491.28-2,780.16

Finding the Fourth Proportional to 8,326.32, 12,491.28 and 2,780.16

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Solution

The fourth proportional to 8,326.32, 12,491.28 and 2,780.16 is: 4,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.32 : 12,491.28 = 2,780.16 : x
  2. Step 2: Convert to fraction form
    8,326.32/12,491.28 = 2,780.16/x
  3. Step 3: Cross multiply
    8,326.32x = 12,491.28 × 2,780.16
  4. Step 4: Simplify right side
    8,326.32x = 34,727,757.00
  5. Step 5: Solve for x
    x = 34,727,757.00/8,326.32
  6. Step 6: Final answer
    x = 4,170.84

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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.