Home / 7,981.87-11,972.80-3,594.21

Finding the Fourth Proportional to 7,981.87, 11,972.80 and 3,594.21

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Solution

The fourth proportional to 7,981.87, 11,972.80 and 3,594.21 is: 5,391.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.87 : 11,972.80 = 3,594.21 : x
  2. Step 2: Convert to fraction form
    7,981.87/11,972.80 = 3,594.21/x
  3. Step 3: Cross multiply
    7,981.87x = 11,972.80 × 3,594.21
  4. Step 4: Simplify right side
    7,981.87x = 43,032,757.49
  5. Step 5: Solve for x
    x = 43,032,757.49/7,981.87
  6. Step 6: Final answer
    x = 5,391.31

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.