Home / 3,109.40-4,293.96-2,117.96

Finding the Fourth Proportional to 3,109.40, 4,293.96 and 2,117.96

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Solution

The fourth proportional to 3,109.40, 4,293.96 and 2,117.96 is: 2,924.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.40 : 4,293.96 = 2,117.96 : x
  2. Step 2: Convert to fraction form
    3,109.40/4,293.96 = 2,117.96/x
  3. Step 3: Cross multiply
    3,109.40x = 4,293.96 × 2,117.96
  4. Step 4: Simplify right side
    3,109.40x = 9,094,435.52
  5. Step 5: Solve for x
    x = 9,094,435.52/3,109.40
  6. Step 6: Final answer
    x = 2,924.82

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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.