Home / 2,261.87-3,121.34-1,267.16

Finding the Fourth Proportional to 2,261.87, 3,121.34 and 1,267.16

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Solution

The fourth proportional to 2,261.87, 3,121.34 and 1,267.16 is: 1,748.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.87 : 3,121.34 = 1,267.16 : x
  2. Step 2: Convert to fraction form
    2,261.87/3,121.34 = 1,267.16/x
  3. Step 3: Cross multiply
    2,261.87x = 3,121.34 × 1,267.16
  4. Step 4: Simplify right side
    2,261.87x = 3,955,215.25
  5. Step 5: Solve for x
    x = 3,955,215.25/2,261.87
  6. Step 6: Final answer
    x = 1,748.65

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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.