Home / 3,086.29-4,259.10-1,689.04

Finding the Fourth Proportional to 3,086.29, 4,259.10 and 1,689.04

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Solution

The fourth proportional to 3,086.29, 4,259.10 and 1,689.04 is: 2,330.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.29 : 4,259.10 = 1,689.04 : x
  2. Step 2: Convert to fraction form
    3,086.29/4,259.10 = 1,689.04/x
  3. Step 3: Cross multiply
    3,086.29x = 4,259.10 × 1,689.04
  4. Step 4: Simplify right side
    3,086.29x = 7,193,790.26
  5. Step 5: Solve for x
    x = 7,193,790.26/3,086.29
  6. Step 6: Final answer
    x = 2,330.89

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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.