Home / 5,359.30-7,396.52-3,121.20

Finding the Fourth Proportional to 5,359.30, 7,396.52 and 3,121.20

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Solution

The fourth proportional to 5,359.30, 7,396.52 and 3,121.20 is: 4,307.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,359.30 : 7,396.52 = 3,121.20 : x
  2. Step 2: Convert to fraction form
    5,359.30/7,396.52 = 3,121.20/x
  3. Step 3: Cross multiply
    5,359.30x = 7,396.52 × 3,121.20
  4. Step 4: Simplify right side
    5,359.30x = 23,086,018.22
  5. Step 5: Solve for x
    x = 23,086,018.22/5,359.30
  6. Step 6: Final answer
    x = 4,307.66

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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.