Home / 7,208.38-10,812.57-3,920.59

Finding the Fourth Proportional to 7,208.38, 10,812.57 and 3,920.59

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Solution

The fourth proportional to 7,208.38, 10,812.57 and 3,920.59 is: 5,880.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208.38 : 10,812.57 = 3,920.59 : x
  2. Step 2: Convert to fraction form
    7,208.38/10,812.57 = 3,920.59/x
  3. Step 3: Cross multiply
    7,208.38x = 10,812.57 × 3,920.59
  4. Step 4: Simplify right side
    7,208.38x = 42,391,653.82
  5. Step 5: Solve for x
    x = 42,391,653.82/7,208.38
  6. Step 6: Final answer
    x = 5,880.89

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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.