Home / 6,722.40-10,076.80-2,561.36

Finding the Fourth Proportional to 6,722.40, 10,076.80 and 2,561.36

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Solution

The fourth proportional to 6,722.40, 10,076.80 and 2,561.36 is: 3,839.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,722.40 : 10,076.80 = 2,561.36 : x
  2. Step 2: Convert to fraction form
    6,722.40/10,076.80 = 2,561.36/x
  3. Step 3: Cross multiply
    6,722.40x = 10,076.80 × 2,561.36
  4. Step 4: Simplify right side
    6,722.40x = 25,810,312.45
  5. Step 5: Solve for x
    x = 25,810,312.45/6,722.40
  6. Step 6: Final answer
    x = 3,839.45

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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.