Home / 7,578.91-10,450.54-5,189.28

Finding the Fourth Proportional to 7,578.91, 10,450.54 and 5,189.28

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Solution

The fourth proportional to 7,578.91, 10,450.54 and 5,189.28 is: 7,155.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.91 : 10,450.54 = 5,189.28 : x
  2. Step 2: Convert to fraction form
    7,578.91/10,450.54 = 5,189.28/x
  3. Step 3: Cross multiply
    7,578.91x = 10,450.54 × 5,189.28
  4. Step 4: Simplify right side
    7,578.91x = 54,230,778.21
  5. Step 5: Solve for x
    x = 54,230,778.21/7,578.91
  6. Step 6: Final answer
    x = 7,155.49

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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.