Home / 2,258.11-3,115.90-1,263.20

Finding the Fourth Proportional to 2,258.11, 3,115.90 and 1,263.20

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Solution

The fourth proportional to 2,258.11, 3,115.90 and 1,263.20 is: 1,743.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,258.11 : 3,115.90 = 1,263.20 : x
  2. Step 2: Convert to fraction form
    2,258.11/3,115.90 = 1,263.20/x
  3. Step 3: Cross multiply
    2,258.11x = 3,115.90 × 1,263.20
  4. Step 4: Simplify right side
    2,258.11x = 3,935,990.88
  5. Step 5: Solve for x
    x = 3,935,990.88/2,258.11
  6. Step 6: Final answer
    x = 1,743.05

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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.