Home / 2,256.28-3,113.70-1,261.60

Finding the Fourth Proportional to 2,256.28, 3,113.70 and 1,261.60

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Solution

The fourth proportional to 2,256.28, 3,113.70 and 1,261.60 is: 1,741.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.28 : 3,113.70 = 1,261.60 : x
  2. Step 2: Convert to fraction form
    2,256.28/3,113.70 = 1,261.60/x
  3. Step 3: Cross multiply
    2,256.28x = 3,113.70 × 1,261.60
  4. Step 4: Simplify right side
    2,256.28x = 3,928,243.92
  5. Step 5: Solve for x
    x = 3,928,243.92/2,256.28
  6. Step 6: Final answer
    x = 1,741.03

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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.