Home / 8,170.20-11,277.36-4,812.75

Finding the Fourth Proportional to 8,170.20, 11,277.36 and 4,812.75

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Solution

The fourth proportional to 8,170.20, 11,277.36 and 4,812.75 is: 6,643.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,170.20 : 11,277.36 = 4,812.75 : x
  2. Step 2: Convert to fraction form
    8,170.20/11,277.36 = 4,812.75/x
  3. Step 3: Cross multiply
    8,170.20x = 11,277.36 × 4,812.75
  4. Step 4: Simplify right side
    8,170.20x = 54,275,114.34
  5. Step 5: Solve for x
    x = 54,275,114.34/8,170.20
  6. Step 6: Final answer
    x = 6,643.06

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Half scale
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Double scale
Find fourth proportional to 8,171.20, 11,278.74 and 4,813.75
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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.