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Finding the Fourth Proportional to 5,639.99, 8,459.99 and 3,563.15

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Solution

The fourth proportional to 5,639.99, 8,459.99 and 3,563.15 is: 5,344.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.99 : 8,459.99 = 3,563.15 : x
  2. Step 2: Convert to fraction form
    5,639.99/8,459.99 = 3,563.15/x
  3. Step 3: Cross multiply
    5,639.99x = 8,459.99 × 3,563.15
  4. Step 4: Simplify right side
    5,639.99x = 30,144,214.20
  5. Step 5: Solve for x
    x = 30,144,214.20/5,639.99
  6. Step 6: Final answer
    x = 5,344.73

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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.