Home / 2,829.24-4,244.40-980.40

Finding the Fourth Proportional to 2,829.24, 4,244.40 and 980.40

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Solution

The fourth proportional to 2,829.24, 4,244.40 and 980.40 is: 1,470.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.24 : 4,244.40 = 980.40 : x
  2. Step 2: Convert to fraction form
    2,829.24/4,244.40 = 980.40/x
  3. Step 3: Cross multiply
    2,829.24x = 4,244.40 × 980.40
  4. Step 4: Simplify right side
    2,829.24x = 4,161,209.76
  5. Step 5: Solve for x
    x = 4,161,209.76/2,829.24
  6. Step 6: Final answer
    x = 1,470.79

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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.