Home / 7,219.75-9,963.29-3,907.75

Finding the Fourth Proportional to 7,219.75, 9,963.29 and 3,907.75

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Solution

The fourth proportional to 7,219.75, 9,963.29 and 3,907.75 is: 5,392.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.75 : 9,963.29 = 3,907.75 : x
  2. Step 2: Convert to fraction form
    7,219.75/9,963.29 = 3,907.75/x
  3. Step 3: Cross multiply
    7,219.75x = 9,963.29 × 3,907.75
  4. Step 4: Simplify right side
    7,219.75x = 38,934,026.96
  5. Step 5: Solve for x
    x = 38,934,026.96/7,219.75
  6. Step 6: Final answer
    x = 5,392.71

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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.