Home / 7,938.15-11,907.23-2,391.51

Finding the Fourth Proportional to 7,938.15, 11,907.23 and 2,391.51

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Solution

The fourth proportional to 7,938.15, 11,907.23 and 2,391.51 is: 3,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.15 : 11,907.23 = 2,391.51 : x
  2. Step 2: Convert to fraction form
    7,938.15/11,907.23 = 2,391.51/x
  3. Step 3: Cross multiply
    7,938.15x = 11,907.23 × 2,391.51
  4. Step 4: Simplify right side
    7,938.15x = 28,476,247.66
  5. Step 5: Solve for x
    x = 28,476,247.66/7,938.15
  6. Step 6: Final answer
    x = 3,587.27

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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.