Home / 3,008.12-4,151.23-1,681.90

Finding the Fourth Proportional to 3,008.12, 4,151.23 and 1,681.90

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Solution

The fourth proportional to 3,008.12, 4,151.23 and 1,681.90 is: 2,321.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,008.12 : 4,151.23 = 1,681.90 : x
  2. Step 2: Convert to fraction form
    3,008.12/4,151.23 = 1,681.90/x
  3. Step 3: Cross multiply
    3,008.12x = 4,151.23 × 1,681.90
  4. Step 4: Simplify right side
    3,008.12x = 6,981,939.15
  5. Step 5: Solve for x
    x = 6,981,939.15/3,008.12
  6. Step 6: Final answer
    x = 2,321.03

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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.