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Finding the Fourth Proportional to 5,461.50, 8,192.25 and 1,813.50

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Solution

The fourth proportional to 5,461.50, 8,192.25 and 1,813.50 is: 2,720.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,461.50 : 8,192.25 = 1,813.50 : x
  2. Step 2: Convert to fraction form
    5,461.50/8,192.25 = 1,813.50/x
  3. Step 3: Cross multiply
    5,461.50x = 8,192.25 × 1,813.50
  4. Step 4: Simplify right side
    5,461.50x = 14,856,645.38
  5. Step 5: Solve for x
    x = 14,856,645.38/5,461.50
  6. Step 6: Final answer
    x = 2,720.25

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Double scale
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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.