Home / 7,168.19-10,749.55-3,419.31

Finding the Fourth Proportional to 7,168.19, 10,749.55 and 3,419.31

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Solution

The fourth proportional to 7,168.19, 10,749.55 and 3,419.31 is: 5,127.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.19 : 10,749.55 = 3,419.31 : x
  2. Step 2: Convert to fraction form
    7,168.19/10,749.55 = 3,419.31/x
  3. Step 3: Cross multiply
    7,168.19x = 10,749.55 × 3,419.31
  4. Step 4: Simplify right side
    7,168.19x = 36,756,043.81
  5. Step 5: Solve for x
    x = 36,756,043.81/7,168.19
  6. Step 6: Final answer
    x = 5,127.66

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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.