Home / 2,011.20-2,775.56-1,127.29

Finding the Fourth Proportional to 2,011.20, 2,775.56 and 1,127.29

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Solution

The fourth proportional to 2,011.20, 2,775.56 and 1,127.29 is: 1,555.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.20 : 2,775.56 = 1,127.29 : x
  2. Step 2: Convert to fraction form
    2,011.20/2,775.56 = 1,127.29/x
  3. Step 3: Cross multiply
    2,011.20x = 2,775.56 × 1,127.29
  4. Step 4: Simplify right side
    2,011.20x = 3,128,849.97
  5. Step 5: Solve for x
    x = 3,128,849.97/2,011.20
  6. Step 6: Final answer
    x = 1,555.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.