Home / 2,257.45-3,115.08-1,262.87

Finding the Fourth Proportional to 2,257.45, 3,115.08 and 1,262.87

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Solution

The fourth proportional to 2,257.45, 3,115.08 and 1,262.87 is: 1,742.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.45 : 3,115.08 = 1,262.87 : x
  2. Step 2: Convert to fraction form
    2,257.45/3,115.08 = 1,262.87/x
  3. Step 3: Cross multiply
    2,257.45x = 3,115.08 × 1,262.87
  4. Step 4: Simplify right side
    2,257.45x = 3,933,941.08
  5. Step 5: Solve for x
    x = 3,933,941.08/2,257.45
  6. Step 6: Final answer
    x = 1,742.65

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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.