Home / 8,899.47-12,280.19-4,920.04

Finding the Fourth Proportional to 8,899.47, 12,280.19 and 4,920.04

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Solution

The fourth proportional to 8,899.47, 12,280.19 and 4,920.04 is: 6,789.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.47 : 12,280.19 = 4,920.04 : x
  2. Step 2: Convert to fraction form
    8,899.47/12,280.19 = 4,920.04/x
  3. Step 3: Cross multiply
    8,899.47x = 12,280.19 × 4,920.04
  4. Step 4: Simplify right side
    8,899.47x = 60,419,026.01
  5. Step 5: Solve for x
    x = 60,419,026.01/8,899.47
  6. Step 6: Final answer
    x = 6,789.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.