Home / 7,772.10-11,656.80-2,839.20

Finding the Fourth Proportional to 7,772.10, 11,656.80 and 2,839.20

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Solution

The fourth proportional to 7,772.10, 11,656.80 and 2,839.20 is: 4,258.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.10 : 11,656.80 = 2,839.20 : x
  2. Step 2: Convert to fraction form
    7,772.10/11,656.80 = 2,839.20/x
  3. Step 3: Cross multiply
    7,772.10x = 11,656.80 × 2,839.20
  4. Step 4: Simplify right side
    7,772.10x = 33,095,986.56
  5. Step 5: Solve for x
    x = 33,095,986.56/7,772.10
  6. Step 6: Final answer
    x = 4,258.31

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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.