Home / 2,712.20-4,069.65-1,068.80

Finding the Fourth Proportional to 2,712.20, 4,069.65 and 1,068.80

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Solution

The fourth proportional to 2,712.20, 4,069.65 and 1,068.80 is: 1,603.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.20 : 4,069.65 = 1,068.80 : x
  2. Step 2: Convert to fraction form
    2,712.20/4,069.65 = 1,068.80/x
  3. Step 3: Cross multiply
    2,712.20x = 4,069.65 × 1,068.80
  4. Step 4: Simplify right side
    2,712.20x = 4,349,641.92
  5. Step 5: Solve for x
    x = 4,349,641.92/2,712.20
  6. Step 6: Final answer
    x = 1,603.73

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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.