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Finding the Fourth Proportional to 5,805.54, 8,006.68 and 3,916.80

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Solution

The fourth proportional to 5,805.54, 8,006.68 and 3,916.80 is: 5,401.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,805.54 : 8,006.68 = 3,916.80 : x
  2. Step 2: Convert to fraction form
    5,805.54/8,006.68 = 3,916.80/x
  3. Step 3: Cross multiply
    5,805.54x = 8,006.68 × 3,916.80
  4. Step 4: Simplify right side
    5,805.54x = 31,360,564.22
  5. Step 5: Solve for x
    x = 31,360,564.22/5,805.54
  6. Step 6: Final answer
    x = 5,401.83

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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.