Home / 3,917.40-5,407.14-2,239.73

Finding the Fourth Proportional to 3,917.40, 5,407.14 and 2,239.73

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Solution

The fourth proportional to 3,917.40, 5,407.14 and 2,239.73 is: 3,091.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.40 : 5,407.14 = 2,239.73 : x
  2. Step 2: Convert to fraction form
    3,917.40/5,407.14 = 2,239.73/x
  3. Step 3: Cross multiply
    3,917.40x = 5,407.14 × 2,239.73
  4. Step 4: Simplify right side
    3,917.40x = 12,110,533.67
  5. Step 5: Solve for x
    x = 12,110,533.67/3,917.40
  6. Step 6: Final answer
    x = 3,091.47

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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.