Home / 6,869.87-10,305.56-2,188.78

Finding the Fourth Proportional to 6,869.87, 10,305.56 and 2,188.78

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Solution

The fourth proportional to 6,869.87, 10,305.56 and 2,188.78 is: 3,283.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,869.87 : 10,305.56 = 2,188.78 : x
  2. Step 2: Convert to fraction form
    6,869.87/10,305.56 = 2,188.78/x
  3. Step 3: Cross multiply
    6,869.87x = 10,305.56 × 2,188.78
  4. Step 4: Simplify right side
    6,869.87x = 22,556,592.67
  5. Step 5: Solve for x
    x = 22,556,592.67/6,869.87
  6. Step 6: Final answer
    x = 3,283.41

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1.5x scale

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.