Home / 7,065.18-9,749.79-3,921.66

Finding the Fourth Proportional to 7,065.18, 9,749.79 and 3,921.66

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Solution

The fourth proportional to 7,065.18, 9,749.79 and 3,921.66 is: 5,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.18 : 9,749.79 = 3,921.66 : x
  2. Step 2: Convert to fraction form
    7,065.18/9,749.79 = 3,921.66/x
  3. Step 3: Cross multiply
    7,065.18x = 9,749.79 × 3,921.66
  4. Step 4: Simplify right side
    7,065.18x = 38,235,361.45
  5. Step 5: Solve for x
    x = 38,235,361.45/7,065.18
  6. Step 6: Final answer
    x = 5,411.80

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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.