Home / 7,429.21-11,141.16-3,479.79

Finding the Fourth Proportional to 7,429.21, 11,141.16 and 3,479.79

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Solution

The fourth proportional to 7,429.21, 11,141.16 and 3,479.79 is: 5,218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,429.21 : 11,141.16 = 3,479.79 : x
  2. Step 2: Convert to fraction form
    7,429.21/11,141.16 = 3,479.79/x
  3. Step 3: Cross multiply
    7,429.21x = 11,141.16 × 3,479.79
  4. Step 4: Simplify right side
    7,429.21x = 38,768,945.46
  5. Step 5: Solve for x
    x = 38,768,945.46/7,429.21
  6. Step 6: Final answer
    x = 5,218.45

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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.