Home / 8,120.76-11,206.56-4,394.76

Finding the Fourth Proportional to 8,120.76, 11,206.56 and 4,394.76

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Solution

The fourth proportional to 8,120.76, 11,206.56 and 4,394.76 is: 6,064.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.76 : 11,206.56 = 4,394.76 : x
  2. Step 2: Convert to fraction form
    8,120.76/11,206.56 = 4,394.76/x
  3. Step 3: Cross multiply
    8,120.76x = 11,206.56 × 4,394.76
  4. Step 4: Simplify right side
    8,120.76x = 49,250,141.63
  5. Step 5: Solve for x
    x = 49,250,141.63/8,120.76
  6. Step 6: Final answer
    x = 6,064.72

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Half scale
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Double scale
Find fourth proportional to 8,121.76, 11,207.94 and 4,395.76
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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.