Home / 3,917.52-5,405.40-2,238.84

Finding the Fourth Proportional to 3,917.52, 5,405.40 and 2,238.84

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Solution

The fourth proportional to 3,917.52, 5,405.40 and 2,238.84 is: 3,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.52 : 5,405.40 = 2,238.84 : x
  2. Step 2: Convert to fraction form
    3,917.52/5,405.40 = 2,238.84/x
  3. Step 3: Cross multiply
    3,917.52x = 5,405.40 × 2,238.84
  4. Step 4: Simplify right side
    3,917.52x = 12,101,825.74
  5. Step 5: Solve for x
    x = 12,101,825.74/3,917.52
  6. Step 6: Final answer
    x = 3,089.15

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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.