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Finding the Fourth Proportional to 3,476.04, 5,214.12 and 879

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Solution

The fourth proportional to 3,476.04, 5,214.12 and 879 is: 1,318.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,476.04 : 5,214.12 = 879 : x
  2. Step 2: Convert to fraction form
    3,476.04/5,214.12 = 879/x
  3. Step 3: Cross multiply
    3,476.04x = 5,214.12 × 879
  4. Step 4: Simplify right side
    3,476.04x = 4,583,211.48
  5. Step 5: Solve for x
    x = 4,583,211.48/3,476.04
  6. Step 6: Final answer
    x = 1,318.52

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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.