Home / 3,319.20-4,980.60-1,470.60

Finding the Fourth Proportional to 3,319.20, 4,980.60 and 1,470.60

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Solution

The fourth proportional to 3,319.20, 4,980.60 and 1,470.60 is: 2,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.20 : 4,980.60 = 1,470.60 : x
  2. Step 2: Convert to fraction form
    3,319.20/4,980.60 = 1,470.60/x
  3. Step 3: Cross multiply
    3,319.20x = 4,980.60 × 1,470.60
  4. Step 4: Simplify right side
    3,319.20x = 7,324,470.36
  5. Step 5: Solve for x
    x = 7,324,470.36/3,319.20
  6. Step 6: Final answer
    x = 2,206.70

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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.