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Finding the Fourth Proportional to 4,025.99, 5,553.05 and 3,890.51

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Solution

The fourth proportional to 4,025.99, 5,553.05 and 3,890.51 is: 5,366.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,025.99 : 5,553.05 = 3,890.51 : x
  2. Step 2: Convert to fraction form
    4,025.99/5,553.05 = 3,890.51/x
  3. Step 3: Cross multiply
    4,025.99x = 5,553.05 × 3,890.51
  4. Step 4: Simplify right side
    4,025.99x = 21,604,217.38
  5. Step 5: Solve for x
    x = 21,604,217.38/4,025.99
  6. Step 6: Final answer
    x = 5,366.19

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Double scale
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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.