Home / 2,261.65-3,121.16-1,266.89

Finding the Fourth Proportional to 2,261.65, 3,121.16 and 1,266.89

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Solution

The fourth proportional to 2,261.65, 3,121.16 and 1,266.89 is: 1,748.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.65 : 3,121.16 = 1,266.89 : x
  2. Step 2: Convert to fraction form
    2,261.65/3,121.16 = 1,266.89/x
  3. Step 3: Cross multiply
    2,261.65x = 3,121.16 × 1,266.89
  4. Step 4: Simplify right side
    2,261.65x = 3,954,165.57
  5. Step 5: Solve for x
    x = 3,954,165.57/2,261.65
  6. Step 6: Final answer
    x = 1,748.36

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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.