Home / 4,378.80-6,568.20-2,629.20

Finding the Fourth Proportional to 4,378.80, 6,568.20 and 2,629.20

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Solution

The fourth proportional to 4,378.80, 6,568.20 and 2,629.20 is: 3,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,378.80 : 6,568.20 = 2,629.20 : x
  2. Step 2: Convert to fraction form
    4,378.80/6,568.20 = 2,629.20/x
  3. Step 3: Cross multiply
    4,378.80x = 6,568.20 × 2,629.20
  4. Step 4: Simplify right side
    4,378.80x = 17,269,111.44
  5. Step 5: Solve for x
    x = 17,269,111.44/4,378.80
  6. Step 6: Final answer
    x = 3,943.80

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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.