Home / 8,051.20-11,103.38-5,215.69

Finding the Fourth Proportional to 8,051.20, 11,103.38 and 5,215.69

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Solution

The fourth proportional to 8,051.20, 11,103.38 and 5,215.69 is: 7,192.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,051.20 : 11,103.38 = 5,215.69 : x
  2. Step 2: Convert to fraction form
    8,051.20/11,103.38 = 5,215.69/x
  3. Step 3: Cross multiply
    8,051.20x = 11,103.38 × 5,215.69
  4. Step 4: Simplify right side
    8,051.20x = 57,911,795.39
  5. Step 5: Solve for x
    x = 57,911,795.39/8,051.20
  6. Step 6: Final answer
    x = 7,192.94

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Half scale
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Double scale
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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.