Home / 3,059.28-4,590.40-979.60

Finding the Fourth Proportional to 3,059.28, 4,590.40 and 979.60

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Solution

The fourth proportional to 3,059.28, 4,590.40 and 979.60 is: 1,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,059.28 : 4,590.40 = 979.60 : x
  2. Step 2: Convert to fraction form
    3,059.28/4,590.40 = 979.60/x
  3. Step 3: Cross multiply
    3,059.28x = 4,590.40 × 979.60
  4. Step 4: Simplify right side
    3,059.28x = 4,496,755.84
  5. Step 5: Solve for x
    x = 4,496,755.84/3,059.28
  6. Step 6: Final answer
    x = 1,469.87

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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.