Home / 2,256.39-3,113.74-1,261.64

Finding the Fourth Proportional to 2,256.39, 3,113.74 and 1,261.64

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Solution

The fourth proportional to 2,256.39, 3,113.74 and 1,261.64 is: 1,741.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.39 : 3,113.74 = 1,261.64 : x
  2. Step 2: Convert to fraction form
    2,256.39/3,113.74 = 1,261.64/x
  3. Step 3: Cross multiply
    2,256.39x = 3,113.74 × 1,261.64
  4. Step 4: Simplify right side
    2,256.39x = 3,928,428.30
  5. Step 5: Solve for x
    x = 3,928,428.30/2,256.39
  6. Step 6: Final answer
    x = 1,741.02

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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.