Home / 3,109.26-4,291.38-2,045.16

Finding the Fourth Proportional to 3,109.26, 4,291.38 and 2,045.16

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Solution

The fourth proportional to 3,109.26, 4,291.38 and 2,045.16 is: 2,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.26 : 4,291.38 = 2,045.16 : x
  2. Step 2: Convert to fraction form
    3,109.26/4,291.38 = 2,045.16/x
  3. Step 3: Cross multiply
    3,109.26x = 4,291.38 × 2,045.16
  4. Step 4: Simplify right side
    3,109.26x = 8,776,558.72
  5. Step 5: Solve for x
    x = 8,776,558.72/3,109.26
  6. Step 6: Final answer
    x = 2,822.72

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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.