Home / 2,091.67-3,139.01-1,685.71

Finding the Fourth Proportional to 2,091.67, 3,139.01 and 1,685.71

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Solution

The fourth proportional to 2,091.67, 3,139.01 and 1,685.71 is: 2,529.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.67 : 3,139.01 = 1,685.71 : x
  2. Step 2: Convert to fraction form
    2,091.67/3,139.01 = 1,685.71/x
  3. Step 3: Cross multiply
    2,091.67x = 3,139.01 × 1,685.71
  4. Step 4: Simplify right side
    2,091.67x = 5,291,460.55
  5. Step 5: Solve for x
    x = 5,291,460.55/2,091.67
  6. Step 6: Final answer
    x = 2,529.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.