Home / 3,699.68-5,105.40-2,021.06

Finding the Fourth Proportional to 3,699.68, 5,105.40 and 2,021.06

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Solution

The fourth proportional to 3,699.68, 5,105.40 and 2,021.06 is: 2,788.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.68 : 5,105.40 = 2,021.06 : x
  2. Step 2: Convert to fraction form
    3,699.68/5,105.40 = 2,021.06/x
  3. Step 3: Cross multiply
    3,699.68x = 5,105.40 × 2,021.06
  4. Step 4: Simplify right side
    3,699.68x = 10,318,319.72
  5. Step 5: Solve for x
    x = 10,318,319.72/3,699.68
  6. Step 6: Final answer
    x = 2,788.98

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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.