Home / 2,281.16-3,147.93-1,286.39

Finding the Fourth Proportional to 2,281.16, 3,147.93 and 1,286.39

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Solution

The fourth proportional to 2,281.16, 3,147.93 and 1,286.39 is: 1,775.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.16 : 3,147.93 = 1,286.39 : x
  2. Step 2: Convert to fraction form
    2,281.16/3,147.93 = 1,286.39/x
  3. Step 3: Cross multiply
    2,281.16x = 3,147.93 × 1,286.39
  4. Step 4: Simplify right side
    2,281.16x = 4,049,449.93
  5. Step 5: Solve for x
    x = 4,049,449.93/2,281.16
  6. Step 6: Final answer
    x = 1,775.18

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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.