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Finding the Fourth Proportional to 5,340.60, 8,010.90 and 4,380.60

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Solution

The fourth proportional to 5,340.60, 8,010.90 and 4,380.60 is: 6,570.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,340.60 : 8,010.90 = 4,380.60 : x
  2. Step 2: Convert to fraction form
    5,340.60/8,010.90 = 4,380.60/x
  3. Step 3: Cross multiply
    5,340.60x = 8,010.90 × 4,380.60
  4. Step 4: Simplify right side
    5,340.60x = 35,092,548.54
  5. Step 5: Solve for x
    x = 35,092,548.54/5,340.60
  6. Step 6: Final answer
    x = 6,570.90

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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.