Home / 2,225.11-3,069.75-1,340.79

Finding the Fourth Proportional to 2,225.11, 3,069.75 and 1,340.79

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Solution

The fourth proportional to 2,225.11, 3,069.75 and 1,340.79 is: 1,849.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.11 : 3,069.75 = 1,340.79 : x
  2. Step 2: Convert to fraction form
    2,225.11/3,069.75 = 1,340.79/x
  3. Step 3: Cross multiply
    2,225.11x = 3,069.75 × 1,340.79
  4. Step 4: Simplify right side
    2,225.11x = 4,115,890.10
  5. Step 5: Solve for x
    x = 4,115,890.10/2,225.11
  6. Step 6: Final answer
    x = 1,849.75

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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.