Home / 2,772.50-4,159.79-1,129.46

Finding the Fourth Proportional to 2,772.50, 4,159.79 and 1,129.46

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Solution

The fourth proportional to 2,772.50, 4,159.79 and 1,129.46 is: 1,694.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.50 : 4,159.79 = 1,129.46 : x
  2. Step 2: Convert to fraction form
    2,772.50/4,159.79 = 1,129.46/x
  3. Step 3: Cross multiply
    2,772.50x = 4,159.79 × 1,129.46
  4. Step 4: Simplify right side
    2,772.50x = 4,698,316.41
  5. Step 5: Solve for x
    x = 4,698,316.41/2,772.50
  6. Step 6: Final answer
    x = 1,694.61

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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.