Home / 2,693.28-4,043.04-1,288.80

Finding the Fourth Proportional to 2,693.28, 4,043.04 and 1,288.80

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Solution

The fourth proportional to 2,693.28, 4,043.04 and 1,288.80 is: 1,934.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,693.28 : 4,043.04 = 1,288.80 : x
  2. Step 2: Convert to fraction form
    2,693.28/4,043.04 = 1,288.80/x
  3. Step 3: Cross multiply
    2,693.28x = 4,043.04 × 1,288.80
  4. Step 4: Simplify right side
    2,693.28x = 5,210,669.95
  5. Step 5: Solve for x
    x = 5,210,669.95/2,693.28
  6. Step 6: Final answer
    x = 1,934.69

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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.