Home / 8,035.20-11,102.40-7,171.20

Finding the Fourth Proportional to 8,035.20, 11,102.40 and 7,171.20

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Solution

The fourth proportional to 8,035.20, 11,102.40 and 7,171.20 is: 9,908.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,035.20 : 11,102.40 = 7,171.20 : x
  2. Step 2: Convert to fraction form
    8,035.20/11,102.40 = 7,171.20/x
  3. Step 3: Cross multiply
    8,035.20x = 11,102.40 × 7,171.20
  4. Step 4: Simplify right side
    8,035.20x = 79,617,530.88
  5. Step 5: Solve for x
    x = 79,617,530.88/8,035.20
  6. Step 6: Final answer
    x = 9,908.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.