Home / 8,813.88-13,220.82-4,200.12

Finding the Fourth Proportional to 8,813.88, 13,220.82 and 4,200.12

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Solution

The fourth proportional to 8,813.88, 13,220.82 and 4,200.12 is: 6,300.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.88 : 13,220.82 = 4,200.12 : x
  2. Step 2: Convert to fraction form
    8,813.88/13,220.82 = 4,200.12/x
  3. Step 3: Cross multiply
    8,813.88x = 13,220.82 × 4,200.12
  4. Step 4: Simplify right side
    8,813.88x = 55,529,030.50
  5. Step 5: Solve for x
    x = 55,529,030.50/8,813.88
  6. Step 6: Final answer
    x = 6,300.18

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.