Home / 2,568.74-3,544.83-1,389.80

Finding the Fourth Proportional to 2,568.74, 3,544.83 and 1,389.80

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Solution

The fourth proportional to 2,568.74, 3,544.83 and 1,389.80 is: 1,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.74 : 3,544.83 = 1,389.80 : x
  2. Step 2: Convert to fraction form
    2,568.74/3,544.83 = 1,389.80/x
  3. Step 3: Cross multiply
    2,568.74x = 3,544.83 × 1,389.80
  4. Step 4: Simplify right side
    2,568.74x = 4,926,587.01
  5. Step 5: Solve for x
    x = 4,926,587.01/2,568.74
  6. Step 6: Final answer
    x = 1,917.90

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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.