Home / 2,257.90-3,115.78-1,262.98

Finding the Fourth Proportional to 2,257.90, 3,115.78 and 1,262.98

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Solution

The fourth proportional to 2,257.90, 3,115.78 and 1,262.98 is: 1,742.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.90 : 3,115.78 = 1,262.98 : x
  2. Step 2: Convert to fraction form
    2,257.90/3,115.78 = 1,262.98/x
  3. Step 3: Cross multiply
    2,257.90x = 3,115.78 × 1,262.98
  4. Step 4: Simplify right side
    2,257.90x = 3,935,167.82
  5. Step 5: Solve for x
    x = 3,935,167.82/2,257.90
  6. Step 6: Final answer
    x = 1,742.84

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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.