Home / 2,257.78-3,115.72-1,263.07

Finding the Fourth Proportional to 2,257.78, 3,115.72 and 1,263.07

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Solution

The fourth proportional to 2,257.78, 3,115.72 and 1,263.07 is: 1,743.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.78 : 3,115.72 = 1,263.07 : x
  2. Step 2: Convert to fraction form
    2,257.78/3,115.72 = 1,263.07/x
  3. Step 3: Cross multiply
    2,257.78x = 3,115.72 × 1,263.07
  4. Step 4: Simplify right side
    2,257.78x = 3,935,372.46
  5. Step 5: Solve for x
    x = 3,935,372.46/2,257.78
  6. Step 6: Final answer
    x = 1,743.03

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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.