Home / 3,934.86-5,430.23-2,166.57

Finding the Fourth Proportional to 3,934.86, 5,430.23 and 2,166.57

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Solution

The fourth proportional to 3,934.86, 5,430.23 and 2,166.57 is: 2,989.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.86 : 5,430.23 = 2,166.57 : x
  2. Step 2: Convert to fraction form
    3,934.86/5,430.23 = 2,166.57/x
  3. Step 3: Cross multiply
    3,934.86x = 5,430.23 × 2,166.57
  4. Step 4: Simplify right side
    3,934.86x = 11,764,962.58
  5. Step 5: Solve for x
    x = 11,764,962.58/3,934.86
  6. Step 6: Final answer
    x = 2,989.93

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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.