Home / 7,514.78-11,278.90-4,007.68

Finding the Fourth Proportional to 7,514.78, 11,278.90 and 4,007.68

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Solution

The fourth proportional to 7,514.78, 11,278.90 and 4,007.68 is: 6,015.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,514.78 : 11,278.90 = 4,007.68 : x
  2. Step 2: Convert to fraction form
    7,514.78/11,278.90 = 4,007.68/x
  3. Step 3: Cross multiply
    7,514.78x = 11,278.90 × 4,007.68
  4. Step 4: Simplify right side
    7,514.78x = 45,202,176.22
  5. Step 5: Solve for x
    x = 45,202,176.22/7,514.78
  6. Step 6: Final answer
    x = 6,015.11

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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.