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Finding the Fourth Proportional to 7,330.78, 10,989.44 and 2,649.68

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Solution

The fourth proportional to 7,330.78, 10,989.44 and 2,649.68 is: 3,972.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,330.78 : 10,989.44 = 2,649.68 : x
  2. Step 2: Convert to fraction form
    7,330.78/10,989.44 = 2,649.68/x
  3. Step 3: Cross multiply
    7,330.78x = 10,989.44 × 2,649.68
  4. Step 4: Simplify right side
    7,330.78x = 29,118,499.38
  5. Step 5: Solve for x
    x = 29,118,499.38/7,330.78
  6. Step 6: Final answer
    x = 3,972.09

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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.