Home / 2,568.10-3,543.97-1,389.17

Finding the Fourth Proportional to 2,568.10, 3,543.97 and 1,389.17

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Solution

The fourth proportional to 2,568.10, 3,543.97 and 1,389.17 is: 1,917.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.10 : 3,543.97 = 1,389.17 : x
  2. Step 2: Convert to fraction form
    2,568.10/3,543.97 = 1,389.17/x
  3. Step 3: Cross multiply
    2,568.10x = 3,543.97 × 1,389.17
  4. Step 4: Simplify right side
    2,568.10x = 4,923,176.80
  5. Step 5: Solve for x
    x = 4,923,176.80/2,568.10
  6. Step 6: Final answer
    x = 1,917.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.