Home / 2,269.75-3,132.10-1,261.45

Finding the Fourth Proportional to 2,269.75, 3,132.10 and 1,261.45

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Solution

The fourth proportional to 2,269.75, 3,132.10 and 1,261.45 is: 1,740.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.75 : 3,132.10 = 1,261.45 : x
  2. Step 2: Convert to fraction form
    2,269.75/3,132.10 = 1,261.45/x
  3. Step 3: Cross multiply
    2,269.75x = 3,132.10 × 1,261.45
  4. Step 4: Simplify right side
    2,269.75x = 3,950,987.55
  5. Step 5: Solve for x
    x = 3,950,987.55/2,269.75
  6. Step 6: Final answer
    x = 1,740.71

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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.