Home / 2,669.50-4,005.20-1,937.80

Finding the Fourth Proportional to 2,669.50, 4,005.20 and 1,937.80

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Solution

The fourth proportional to 2,669.50, 4,005.20 and 1,937.80 is: 2,907.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.50 : 4,005.20 = 1,937.80 : x
  2. Step 2: Convert to fraction form
    2,669.50/4,005.20 = 1,937.80/x
  3. Step 3: Cross multiply
    2,669.50x = 4,005.20 × 1,937.80
  4. Step 4: Simplify right side
    2,669.50x = 7,761,276.56
  5. Step 5: Solve for x
    x = 7,761,276.56/2,669.50
  6. Step 6: Final answer
    x = 2,907.39

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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.