Home / 7,609.39-11,415-2,928.31

Finding the Fourth Proportional to 7,609.39, 11,415 and 2,928.31

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Solution

The fourth proportional to 7,609.39, 11,415 and 2,928.31 is: 4,392.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,609.39 : 11,415 = 2,928.31 : x
  2. Step 2: Convert to fraction form
    7,609.39/11,415 = 2,928.31/x
  3. Step 3: Cross multiply
    7,609.39x = 11,415 × 2,928.31
  4. Step 4: Simplify right side
    7,609.39x = 33,426,658.65
  5. Step 5: Solve for x
    x = 33,426,658.65/7,609.39
  6. Step 6: Final answer
    x = 4,392.82

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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.