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Finding the Fourth Proportional to 8,899.04, 12,280.58 and 4,920.22

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Solution

The fourth proportional to 8,899.04, 12,280.58 and 4,920.22 is: 6,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.04 : 12,280.58 = 4,920.22 : x
  2. Step 2: Convert to fraction form
    8,899.04/12,280.58 = 4,920.22/x
  3. Step 3: Cross multiply
    8,899.04x = 12,280.58 × 4,920.22
  4. Step 4: Simplify right side
    8,899.04x = 60,423,164.53
  5. Step 5: Solve for x
    x = 60,423,164.53/8,899.04
  6. Step 6: Final answer
    x = 6,789.85

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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.