Home / 4,089.29-5,646.38-3,143.57

Finding the Fourth Proportional to 4,089.29, 5,646.38 and 3,143.57

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Solution

The fourth proportional to 4,089.29, 5,646.38 and 3,143.57 is: 4,340.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.29 : 5,646.38 = 3,143.57 : x
  2. Step 2: Convert to fraction form
    4,089.29/5,646.38 = 3,143.57/x
  3. Step 3: Cross multiply
    4,089.29x = 5,646.38 × 3,143.57
  4. Step 4: Simplify right side
    4,089.29x = 17,749,746.83
  5. Step 5: Solve for x
    x = 17,749,746.83/4,089.29
  6. Step 6: Final answer
    x = 4,340.55

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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.