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Finding the Fourth Proportional to 2,039.68, 3,059.13 and 578.78

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Solution

The fourth proportional to 2,039.68, 3,059.13 and 578.78 is: 868.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,039.68 : 3,059.13 = 578.78 : x
  2. Step 2: Convert to fraction form
    2,039.68/3,059.13 = 578.78/x
  3. Step 3: Cross multiply
    2,039.68x = 3,059.13 × 578.78
  4. Step 4: Simplify right side
    2,039.68x = 1,770,563.26
  5. Step 5: Solve for x
    x = 1,770,563.26/2,039.68
  6. Step 6: Final answer
    x = 868.06

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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.