Home / 2,824.80-4,239.60-1,267.20

Finding the Fourth Proportional to 2,824.80, 4,239.60 and 1,267.20

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Solution

The fourth proportional to 2,824.80, 4,239.60 and 1,267.20 is: 1,901.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,824.80 : 4,239.60 = 1,267.20 : x
  2. Step 2: Convert to fraction form
    2,824.80/4,239.60 = 1,267.20/x
  3. Step 3: Cross multiply
    2,824.80x = 4,239.60 × 1,267.20
  4. Step 4: Simplify right side
    2,824.80x = 5,372,421.12
  5. Step 5: Solve for x
    x = 5,372,421.12/2,824.80
  6. Step 6: Final answer
    x = 1,901.88

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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.