Home / 7,517.81-10,382.78-5,166.79

Finding the Fourth Proportional to 7,517.81, 10,382.78 and 5,166.79

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Solution

The fourth proportional to 7,517.81, 10,382.78 and 5,166.79 is: 7,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,517.81 : 10,382.78 = 5,166.79 : x
  2. Step 2: Convert to fraction form
    7,517.81/10,382.78 = 5,166.79/x
  3. Step 3: Cross multiply
    7,517.81x = 10,382.78 × 5,166.79
  4. Step 4: Simplify right side
    7,517.81x = 53,645,630.84
  5. Step 5: Solve for x
    x = 53,645,630.84/7,517.81
  6. Step 6: Final answer
    x = 7,135.80

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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.