Home / 7,806.38-10,772.80-5,449.88

Finding the Fourth Proportional to 7,806.38, 10,772.80 and 5,449.88

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Solution

The fourth proportional to 7,806.38, 10,772.80 and 5,449.88 is: 7,520.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,806.38 : 10,772.80 = 5,449.88 : x
  2. Step 2: Convert to fraction form
    7,806.38/10,772.80 = 5,449.88/x
  3. Step 3: Cross multiply
    7,806.38x = 10,772.80 × 5,449.88
  4. Step 4: Simplify right side
    7,806.38x = 58,710,480.57
  5. Step 5: Solve for x
    x = 58,710,480.57/7,806.38
  6. Step 6: Final answer
    x = 7,520.84

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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.