Home / 5,420.36-7,480.96-3,296.57

Finding the Fourth Proportional to 5,420.36, 7,480.96 and 3,296.57

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Solution

The fourth proportional to 5,420.36, 7,480.96 and 3,296.57 is: 4,549.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.36 : 7,480.96 = 3,296.57 : x
  2. Step 2: Convert to fraction form
    5,420.36/7,480.96 = 3,296.57/x
  3. Step 3: Cross multiply
    5,420.36x = 7,480.96 × 3,296.57
  4. Step 4: Simplify right side
    5,420.36x = 24,661,462.66
  5. Step 5: Solve for x
    x = 24,661,462.66/5,420.36
  6. Step 6: Final answer
    x = 4,549.78

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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.