Home / 7,112.20-10,681.10-6,881.80

Finding the Fourth Proportional to 7,112.20, 10,681.10 and 6,881.80

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Solution

The fourth proportional to 7,112.20, 10,681.10 and 6,881.80 is: 10,335.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.20 : 10,681.10 = 6,881.80 : x
  2. Step 2: Convert to fraction form
    7,112.20/10,681.10 = 6,881.80/x
  3. Step 3: Cross multiply
    7,112.20x = 10,681.10 × 6,881.80
  4. Step 4: Simplify right side
    7,112.20x = 73,505,193.98
  5. Step 5: Solve for x
    x = 73,505,193.98/7,112.20
  6. Step 6: Final answer
    x = 10,335.09

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1.5x scale

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.