Home / 3,917.72-5,875.90-1,106.75

Finding the Fourth Proportional to 3,917.72, 5,875.90 and 1,106.75

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Solution

The fourth proportional to 3,917.72, 5,875.90 and 1,106.75 is: 1,659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.72 : 5,875.90 = 1,106.75 : x
  2. Step 2: Convert to fraction form
    3,917.72/5,875.90 = 1,106.75/x
  3. Step 3: Cross multiply
    3,917.72x = 5,875.90 × 1,106.75
  4. Step 4: Simplify right side
    3,917.72x = 6,503,117.41
  5. Step 5: Solve for x
    x = 6,503,117.41/3,917.72
  6. Step 6: Final answer
    x = 1,659.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.