Home / 7,515.78-10,371.74-4,158.54

Finding the Fourth Proportional to 7,515.78, 10,371.74 and 4,158.54

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Solution

The fourth proportional to 7,515.78, 10,371.74 and 4,158.54 is: 5,738.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.78 : 10,371.74 = 4,158.54 : x
  2. Step 2: Convert to fraction form
    7,515.78/10,371.74 = 4,158.54/x
  3. Step 3: Cross multiply
    7,515.78x = 10,371.74 × 4,158.54
  4. Step 4: Simplify right side
    7,515.78x = 43,131,235.97
  5. Step 5: Solve for x
    x = 43,131,235.97/7,515.78
  6. Step 6: Final answer
    x = 5,738.75

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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.