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Finding the Fourth Proportional to 3,998.88, 5,998.32 and 1,810.26

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Solution

The fourth proportional to 3,998.88, 5,998.32 and 1,810.26 is: 2,715.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.88 : 5,998.32 = 1,810.26 : x
  2. Step 2: Convert to fraction form
    3,998.88/5,998.32 = 1,810.26/x
  3. Step 3: Cross multiply
    3,998.88x = 5,998.32 × 1,810.26
  4. Step 4: Simplify right side
    3,998.88x = 10,858,518.76
  5. Step 5: Solve for x
    x = 10,858,518.76/3,998.88
  6. Step 6: Final answer
    x = 2,715.39

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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.