Home / 8,120.60-11,214-5,977.34

Finding the Fourth Proportional to 8,120.60, 11,214 and 5,977.34

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Solution

The fourth proportional to 8,120.60, 11,214 and 5,977.34 is: 8,254.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.60 : 11,214 = 5,977.34 : x
  2. Step 2: Convert to fraction form
    8,120.60/11,214 = 5,977.34/x
  3. Step 3: Cross multiply
    8,120.60x = 11,214 × 5,977.34
  4. Step 4: Simplify right side
    8,120.60x = 67,029,890.76
  5. Step 5: Solve for x
    x = 67,029,890.76/8,120.60
  6. Step 6: Final answer
    x = 8,254.30

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.