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Finding the Fourth Proportional to 2,568.90, 3,826.80 and 2,491.44

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Solution

The fourth proportional to 2,568.90, 3,826.80 and 2,491.44 is: 3,711.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.90 : 3,826.80 = 2,491.44 : x
  2. Step 2: Convert to fraction form
    2,568.90/3,826.80 = 2,491.44/x
  3. Step 3: Cross multiply
    2,568.90x = 3,826.80 × 2,491.44
  4. Step 4: Simplify right side
    2,568.90x = 9,534,242.59
  5. Step 5: Solve for x
    x = 9,534,242.59/2,568.90
  6. Step 6: Final answer
    x = 3,711.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.