Home / 2,267.90-3,129.78-1,273.11

Finding the Fourth Proportional to 2,267.90, 3,129.78 and 1,273.11

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Solution

The fourth proportional to 2,267.90, 3,129.78 and 1,273.11 is: 1,756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,267.90 : 3,129.78 = 1,273.11 : x
  2. Step 2: Convert to fraction form
    2,267.90/3,129.78 = 1,273.11/x
  3. Step 3: Cross multiply
    2,267.90x = 3,129.78 × 1,273.11
  4. Step 4: Simplify right side
    2,267.90x = 3,984,554.22
  5. Step 5: Solve for x
    x = 3,984,554.22/2,267.90
  6. Step 6: Final answer
    x = 1,756.94

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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.