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Finding the Fourth Proportional to 5,478.71, 7,560.60 and 2,994.71

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Solution

The fourth proportional to 5,478.71, 7,560.60 and 2,994.71 is: 4,132.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.71 : 7,560.60 = 2,994.71 : x
  2. Step 2: Convert to fraction form
    5,478.71/7,560.60 = 2,994.71/x
  3. Step 3: Cross multiply
    5,478.71x = 7,560.60 × 2,994.71
  4. Step 4: Simplify right side
    5,478.71x = 22,641,766.62
  5. Step 5: Solve for x
    x = 22,641,766.62/5,478.71
  6. Step 6: Final answer
    x = 4,132.69

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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.