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Finding the Fourth Proportional to 7,316.78, 10,974.20 and 2,934.30

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Solution

The fourth proportional to 7,316.78, 10,974.20 and 2,934.30 is: 4,401.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,316.78 : 10,974.20 = 2,934.30 : x
  2. Step 2: Convert to fraction form
    7,316.78/10,974.20 = 2,934.30/x
  3. Step 3: Cross multiply
    7,316.78x = 10,974.20 × 2,934.30
  4. Step 4: Simplify right side
    7,316.78x = 32,201,595.06
  5. Step 5: Solve for x
    x = 32,201,595.06/7,316.78
  6. Step 6: Final answer
    x = 4,401.06

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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.