Home / 5,360.44-7,396.68-3,121.78

Finding the Fourth Proportional to 5,360.44, 7,396.68 and 3,121.78

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Solution

The fourth proportional to 5,360.44, 7,396.68 and 3,121.78 is: 4,307.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,360.44 : 7,396.68 = 3,121.78 : x
  2. Step 2: Convert to fraction form
    5,360.44/7,396.68 = 3,121.78/x
  3. Step 3: Cross multiply
    5,360.44x = 7,396.68 × 3,121.78
  4. Step 4: Simplify right side
    5,360.44x = 23,090,807.69
  5. Step 5: Solve for x
    x = 23,090,807.69/5,360.44
  6. Step 6: Final answer
    x = 4,307.63

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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.