Home / 2,613.38-3,912.87-1,686.63

Finding the Fourth Proportional to 2,613.38, 3,912.87 and 1,686.63

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Solution

The fourth proportional to 2,613.38, 3,912.87 and 1,686.63 is: 2,525.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.38 : 3,912.87 = 1,686.63 : x
  2. Step 2: Convert to fraction form
    2,613.38/3,912.87 = 1,686.63/x
  3. Step 3: Cross multiply
    2,613.38x = 3,912.87 × 1,686.63
  4. Step 4: Simplify right side
    2,613.38x = 6,599,563.93
  5. Step 5: Solve for x
    x = 6,599,563.93/2,613.38
  6. Step 6: Final answer
    x = 2,525.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.