Home / 2,980.20-4,470.30-2,958.60

Finding the Fourth Proportional to 2,980.20, 4,470.30 and 2,958.60

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Solution

The fourth proportional to 2,980.20, 4,470.30 and 2,958.60 is: 4,437.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.20 : 4,470.30 = 2,958.60 : x
  2. Step 2: Convert to fraction form
    2,980.20/4,470.30 = 2,958.60/x
  3. Step 3: Cross multiply
    2,980.20x = 4,470.30 × 2,958.60
  4. Step 4: Simplify right side
    2,980.20x = 13,225,829.58
  5. Step 5: Solve for x
    x = 13,225,829.58/2,980.20
  6. Step 6: Final answer
    x = 4,437.90

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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.