Home / 7,763.24-10,719.60-5,115.80

Finding the Fourth Proportional to 7,763.24, 10,719.60 and 5,115.80

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Solution

The fourth proportional to 7,763.24, 10,719.60 and 5,115.80 is: 7,063.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,763.24 : 10,719.60 = 5,115.80 : x
  2. Step 2: Convert to fraction form
    7,763.24/10,719.60 = 5,115.80/x
  3. Step 3: Cross multiply
    7,763.24x = 10,719.60 × 5,115.80
  4. Step 4: Simplify right side
    7,763.24x = 54,839,329.68
  5. Step 5: Solve for x
    x = 54,839,329.68/7,763.24
  6. Step 6: Final answer
    x = 7,063.97

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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.