Home / 3,934.96-5,430.23-2,166.57

Finding the Fourth Proportional to 3,934.96, 5,430.23 and 2,166.57

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Solution

The fourth proportional to 3,934.96, 5,430.23 and 2,166.57 is: 2,989.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.96 : 5,430.23 = 2,166.57 : x
  2. Step 2: Convert to fraction form
    3,934.96/5,430.23 = 2,166.57/x
  3. Step 3: Cross multiply
    3,934.96x = 5,430.23 × 2,166.57
  4. Step 4: Simplify right side
    3,934.96x = 11,764,962.28
  5. Step 5: Solve for x
    x = 11,764,962.28/3,934.96
  6. Step 6: Final answer
    x = 2,989.85

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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.