Home / 7,918.50-11,881.21-3,761.45

Finding the Fourth Proportional to 7,918.50, 11,881.21 and 3,761.45

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Solution

The fourth proportional to 7,918.50, 11,881.21 and 3,761.45 is: 5,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.50 : 11,881.21 = 3,761.45 : x
  2. Step 2: Convert to fraction form
    7,918.50/11,881.21 = 3,761.45/x
  3. Step 3: Cross multiply
    7,918.50x = 11,881.21 × 3,761.45
  4. Step 4: Simplify right side
    7,918.50x = 44,690,577.35
  5. Step 5: Solve for x
    x = 44,690,577.35/7,918.50
  6. Step 6: Final answer
    x = 5,643.82

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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.