Home / 5,328.96-7,999.20-3,868.80

Finding the Fourth Proportional to 5,328.96, 7,999.20 and 3,868.80

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Solution

The fourth proportional to 5,328.96, 7,999.20 and 3,868.80 is: 5,807.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.96 : 7,999.20 = 3,868.80 : x
  2. Step 2: Convert to fraction form
    5,328.96/7,999.20 = 3,868.80/x
  3. Step 3: Cross multiply
    5,328.96x = 7,999.20 × 3,868.80
  4. Step 4: Simplify right side
    5,328.96x = 30,947,304.96
  5. Step 5: Solve for x
    x = 30,947,304.96/5,328.96
  6. Step 6: Final answer
    x = 5,807.38

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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.