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Finding the Fourth Proportional to 8,581.48, 12,869.06 and 2,958

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Solution

The fourth proportional to 8,581.48, 12,869.06 and 2,958 is: 4,435.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.48 : 12,869.06 = 2,958 : x
  2. Step 2: Convert to fraction form
    8,581.48/12,869.06 = 2,958/x
  3. Step 3: Cross multiply
    8,581.48x = 12,869.06 × 2,958
  4. Step 4: Simplify right side
    8,581.48x = 38,066,679.48
  5. Step 5: Solve for x
    x = 38,066,679.48/8,581.48
  6. Step 6: Final answer
    x = 4,435.91

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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.