Home / 2,674.72-4,011.48-1,287.20

Finding the Fourth Proportional to 2,674.72, 4,011.48 and 1,287.20

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Solution

The fourth proportional to 2,674.72, 4,011.48 and 1,287.20 is: 1,930.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,674.72 : 4,011.48 = 1,287.20 : x
  2. Step 2: Convert to fraction form
    2,674.72/4,011.48 = 1,287.20/x
  3. Step 3: Cross multiply
    2,674.72x = 4,011.48 × 1,287.20
  4. Step 4: Simplify right side
    2,674.72x = 5,163,577.06
  5. Step 5: Solve for x
    x = 5,163,577.06/2,674.72
  6. Step 6: Final answer
    x = 1,930.51

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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.