Home / 3,100.32-4,278.40-1,683.96

Finding the Fourth Proportional to 3,100.32, 4,278.40 and 1,683.96

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Solution

The fourth proportional to 3,100.32, 4,278.40 and 1,683.96 is: 2,323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.32 : 4,278.40 = 1,683.96 : x
  2. Step 2: Convert to fraction form
    3,100.32/4,278.40 = 1,683.96/x
  3. Step 3: Cross multiply
    3,100.32x = 4,278.40 × 1,683.96
  4. Step 4: Simplify right side
    3,100.32x = 7,204,654.46
  5. Step 5: Solve for x
    x = 7,204,654.46/3,100.32
  6. Step 6: Final answer
    x = 2,323.84

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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.