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Finding the Fourth Proportional to 3,476.61, 5,214.88 and 879.55

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Solution

The fourth proportional to 3,476.61, 5,214.88 and 879.55 is: 1,319.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,476.61 : 5,214.88 = 879.55 : x
  2. Step 2: Convert to fraction form
    3,476.61/5,214.88 = 879.55/x
  3. Step 3: Cross multiply
    3,476.61x = 5,214.88 × 879.55
  4. Step 4: Simplify right side
    3,476.61x = 4,586,747.70
  5. Step 5: Solve for x
    x = 4,586,747.70/3,476.61
  6. Step 6: Final answer
    x = 1,319.32

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1.5x scale

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.