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Finding the Fourth Proportional to 9,149.76, 12,626.68 and 4,958

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Solution

The fourth proportional to 9,149.76, 12,626.68 and 4,958 is: 6,842.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,149.76 : 12,626.68 = 4,958 : x
  2. Step 2: Convert to fraction form
    9,149.76/12,626.68 = 4,958/x
  3. Step 3: Cross multiply
    9,149.76x = 12,626.68 × 4,958
  4. Step 4: Simplify right side
    9,149.76x = 62,603,079.44
  5. Step 5: Solve for x
    x = 62,603,079.44/9,149.76
  6. Step 6: Final answer
    x = 6,842.05

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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.