Home / 3,862.34-5,329.94-2,160.86

Finding the Fourth Proportional to 3,862.34, 5,329.94 and 2,160.86

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Solution

The fourth proportional to 3,862.34, 5,329.94 and 2,160.86 is: 2,981.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.34 : 5,329.94 = 2,160.86 : x
  2. Step 2: Convert to fraction form
    3,862.34/5,329.94 = 2,160.86/x
  3. Step 3: Cross multiply
    3,862.34x = 5,329.94 × 2,160.86
  4. Step 4: Simplify right side
    3,862.34x = 11,517,254.15
  5. Step 5: Solve for x
    x = 11,517,254.15/3,862.34
  6. Step 6: Final answer
    x = 2,981.94

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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.