Home / 8,428.06-12,641.08-2,881.29

Finding the Fourth Proportional to 8,428.06, 12,641.08 and 2,881.29

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Solution

The fourth proportional to 8,428.06, 12,641.08 and 2,881.29 is: 4,321.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.06 : 12,641.08 = 2,881.29 : x
  2. Step 2: Convert to fraction form
    8,428.06/12,641.08 = 2,881.29/x
  3. Step 3: Cross multiply
    8,428.06x = 12,641.08 × 2,881.29
  4. Step 4: Simplify right side
    8,428.06x = 36,422,617.39
  5. Step 5: Solve for x
    x = 36,422,617.39/8,428.06
  6. Step 6: Final answer
    x = 4,321.59

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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.