Home / 2,255.99-3,113.28-1,261.26

Finding the Fourth Proportional to 2,255.99, 3,113.28 and 1,261.26

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Solution

The fourth proportional to 2,255.99, 3,113.28 and 1,261.26 is: 1,740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.99 : 3,113.28 = 1,261.26 : x
  2. Step 2: Convert to fraction form
    2,255.99/3,113.28 = 1,261.26/x
  3. Step 3: Cross multiply
    2,255.99x = 3,113.28 × 1,261.26
  4. Step 4: Simplify right side
    2,255.99x = 3,926,655.53
  5. Step 5: Solve for x
    x = 3,926,655.53/2,255.99
  6. Step 6: Final answer
    x = 1,740.55

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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.