Home / 2,253.56-3,109.79-1,258.90

Finding the Fourth Proportional to 2,253.56, 3,109.79 and 1,258.90

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Solution

The fourth proportional to 2,253.56, 3,109.79 and 1,258.90 is: 1,737.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.56 : 3,109.79 = 1,258.90 : x
  2. Step 2: Convert to fraction form
    2,253.56/3,109.79 = 1,258.90/x
  3. Step 3: Cross multiply
    2,253.56x = 3,109.79 × 1,258.90
  4. Step 4: Simplify right side
    2,253.56x = 3,914,908.34
  5. Step 5: Solve for x
    x = 3,914,908.34/2,253.56
  6. Step 6: Final answer
    x = 1,737.21

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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.