Home / 5,307.20-7,960.80-3,361.60

Finding the Fourth Proportional to 5,307.20, 7,960.80 and 3,361.60

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Solution

The fourth proportional to 5,307.20, 7,960.80 and 3,361.60 is: 5,042.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,307.20 : 7,960.80 = 3,361.60 : x
  2. Step 2: Convert to fraction form
    5,307.20/7,960.80 = 3,361.60/x
  3. Step 3: Cross multiply
    5,307.20x = 7,960.80 × 3,361.60
  4. Step 4: Simplify right side
    5,307.20x = 26,761,025.28
  5. Step 5: Solve for x
    x = 26,761,025.28/5,307.20
  6. Step 6: Final answer
    x = 5,042.40

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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.