Home / 3,319.20-4,978.80-1,369.26

Finding the Fourth Proportional to 3,319.20, 4,978.80 and 1,369.26

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Solution

The fourth proportional to 3,319.20, 4,978.80 and 1,369.26 is: 2,053.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.20 : 4,978.80 = 1,369.26 : x
  2. Step 2: Convert to fraction form
    3,319.20/4,978.80 = 1,369.26/x
  3. Step 3: Cross multiply
    3,319.20x = 4,978.80 × 1,369.26
  4. Step 4: Simplify right side
    3,319.20x = 6,817,239.95
  5. Step 5: Solve for x
    x = 6,817,239.95/3,319.20
  6. Step 6: Final answer
    x = 2,053.88

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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.