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Finding the Fourth Proportional to 5,972.40, 8,958.60 and 2,076.80

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Solution

The fourth proportional to 5,972.40, 8,958.60 and 2,076.80 is: 3,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,972.40 : 8,958.60 = 2,076.80 : x
  2. Step 2: Convert to fraction form
    5,972.40/8,958.60 = 2,076.80/x
  3. Step 3: Cross multiply
    5,972.40x = 8,958.60 × 2,076.80
  4. Step 4: Simplify right side
    5,972.40x = 18,605,220.48
  5. Step 5: Solve for x
    x = 18,605,220.48/5,972.40
  6. Step 6: Final answer
    x = 3,115.20

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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.