Home / 5,396.79-7,447.48-3,158.76

Finding the Fourth Proportional to 5,396.79, 7,447.48 and 3,158.76

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Solution

The fourth proportional to 5,396.79, 7,447.48 and 3,158.76 is: 4,359.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,396.79 : 7,447.48 = 3,158.76 : x
  2. Step 2: Convert to fraction form
    5,396.79/7,447.48 = 3,158.76/x
  3. Step 3: Cross multiply
    5,396.79x = 7,447.48 × 3,158.76
  4. Step 4: Simplify right side
    5,396.79x = 23,524,786.13
  5. Step 5: Solve for x
    x = 23,524,786.13/5,396.79
  6. Step 6: Final answer
    x = 4,359.03

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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.