Home / 6,945.21-10,419.71-3,657.42

Finding the Fourth Proportional to 6,945.21, 10,419.71 and 3,657.42

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Solution

The fourth proportional to 6,945.21, 10,419.71 and 3,657.42 is: 5,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,945.21 : 10,419.71 = 3,657.42 : x
  2. Step 2: Convert to fraction form
    6,945.21/10,419.71 = 3,657.42/x
  3. Step 3: Cross multiply
    6,945.21x = 10,419.71 × 3,657.42
  4. Step 4: Simplify right side
    6,945.21x = 38,109,237.46
  5. Step 5: Solve for x
    x = 38,109,237.46/6,945.21
  6. Step 6: Final answer
    x = 5,487.13

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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.