Home / 7,918.89-11,881.50-2,989.92

Finding the Fourth Proportional to 7,918.89, 11,881.50 and 2,989.92

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Solution

The fourth proportional to 7,918.89, 11,881.50 and 2,989.92 is: 4,486.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.89 : 11,881.50 = 2,989.92 : x
  2. Step 2: Convert to fraction form
    7,918.89/11,881.50 = 2,989.92/x
  3. Step 3: Cross multiply
    7,918.89x = 11,881.50 × 2,989.92
  4. Step 4: Simplify right side
    7,918.89x = 35,524,734.48
  5. Step 5: Solve for x
    x = 35,524,734.48/7,918.89
  6. Step 6: Final answer
    x = 4,486.08

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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.