Home / 5,920.34-8,161.79-3,930.17

Finding the Fourth Proportional to 5,920.34, 8,161.79 and 3,930.17

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Solution

The fourth proportional to 5,920.34, 8,161.79 and 3,930.17 is: 5,418.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.34 : 8,161.79 = 3,930.17 : x
  2. Step 2: Convert to fraction form
    5,920.34/8,161.79 = 3,930.17/x
  3. Step 3: Cross multiply
    5,920.34x = 8,161.79 × 3,930.17
  4. Step 4: Simplify right side
    5,920.34x = 32,077,161.74
  5. Step 5: Solve for x
    x = 32,077,161.74/5,920.34
  6. Step 6: Final answer
    x = 5,418.13

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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.