Home / 3,911.59-5,397.93-2,143.19

Finding the Fourth Proportional to 3,911.59, 5,397.93 and 2,143.19

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Solution

The fourth proportional to 3,911.59, 5,397.93 and 2,143.19 is: 2,957.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.59 : 5,397.93 = 2,143.19 : x
  2. Step 2: Convert to fraction form
    3,911.59/5,397.93 = 2,143.19/x
  3. Step 3: Cross multiply
    3,911.59x = 5,397.93 × 2,143.19
  4. Step 4: Simplify right side
    3,911.59x = 11,568,751.89
  5. Step 5: Solve for x
    x = 11,568,751.89/3,911.59
  6. Step 6: Final answer
    x = 2,957.56

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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.