Home / 3,911.67-5,398.17-2,143.16

Finding the Fourth Proportional to 3,911.67, 5,398.17 and 2,143.16

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Solution

The fourth proportional to 3,911.67, 5,398.17 and 2,143.16 is: 2,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.67 : 5,398.17 = 2,143.16 : x
  2. Step 2: Convert to fraction form
    3,911.67/5,398.17 = 2,143.16/x
  3. Step 3: Cross multiply
    3,911.67x = 5,398.17 × 2,143.16
  4. Step 4: Simplify right side
    3,911.67x = 11,569,142.02
  5. Step 5: Solve for x
    x = 11,569,142.02/3,911.67
  6. Step 6: Final answer
    x = 2,957.60

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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.