Home / 2,642.26-3,641.40-2,167.39

Finding the Fourth Proportional to 2,642.26, 3,641.40 and 2,167.39

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Solution

The fourth proportional to 2,642.26, 3,641.40 and 2,167.39 is: 2,986.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.26 : 3,641.40 = 2,167.39 : x
  2. Step 2: Convert to fraction form
    2,642.26/3,641.40 = 2,167.39/x
  3. Step 3: Cross multiply
    2,642.26x = 3,641.40 × 2,167.39
  4. Step 4: Simplify right side
    2,642.26x = 7,892,352.24
  5. Step 5: Solve for x
    x = 7,892,352.24/2,642.26
  6. Step 6: Final answer
    x = 2,986.97

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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.