Home / 7,918.29-11,889.43-6,288.05

Finding the Fourth Proportional to 7,918.29, 11,889.43 and 6,288.05

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Solution

The fourth proportional to 7,918.29, 11,889.43 and 6,288.05 is: 9,441.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.29 : 11,889.43 = 6,288.05 : x
  2. Step 2: Convert to fraction form
    7,918.29/11,889.43 = 6,288.05/x
  3. Step 3: Cross multiply
    7,918.29x = 11,889.43 × 6,288.05
  4. Step 4: Simplify right side
    7,918.29x = 74,761,344.31
  5. Step 5: Solve for x
    x = 74,761,344.31/7,918.29
  6. Step 6: Final answer
    x = 9,441.60

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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.