Home / 7,419.78-11,131.38-2,225.76

Finding the Fourth Proportional to 7,419.78, 11,131.38 and 2,225.76

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Solution

The fourth proportional to 7,419.78, 11,131.38 and 2,225.76 is: 3,339.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.78 : 11,131.38 = 2,225.76 : x
  2. Step 2: Convert to fraction form
    7,419.78/11,131.38 = 2,225.76/x
  3. Step 3: Cross multiply
    7,419.78x = 11,131.38 × 2,225.76
  4. Step 4: Simplify right side
    7,419.78x = 24,775,780.35
  5. Step 5: Solve for x
    x = 24,775,780.35/7,419.78
  6. Step 6: Final answer
    x = 3,339.15

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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.