Home / 3,917.14-5,405.55-2,124.52

Finding the Fourth Proportional to 3,917.14, 5,405.55 and 2,124.52

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Solution

The fourth proportional to 3,917.14, 5,405.55 and 2,124.52 is: 2,931.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.14 : 5,405.55 = 2,124.52 : x
  2. Step 2: Convert to fraction form
    3,917.14/5,405.55 = 2,124.52/x
  3. Step 3: Cross multiply
    3,917.14x = 5,405.55 × 2,124.52
  4. Step 4: Simplify right side
    3,917.14x = 11,484,199.09
  5. Step 5: Solve for x
    x = 11,484,199.09/3,917.14
  6. Step 6: Final answer
    x = 2,931.78

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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.