Home / 2,071.40-3,101.78-1,145.92

Finding the Fourth Proportional to 2,071.40, 3,101.78 and 1,145.92

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Solution

The fourth proportional to 2,071.40, 3,101.78 and 1,145.92 is: 1,715.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.40 : 3,101.78 = 1,145.92 : x
  2. Step 2: Convert to fraction form
    2,071.40/3,101.78 = 1,145.92/x
  3. Step 3: Cross multiply
    2,071.40x = 3,101.78 × 1,145.92
  4. Step 4: Simplify right side
    2,071.40x = 3,554,391.74
  5. Step 5: Solve for x
    x = 3,554,391.74/2,071.40
  6. Step 6: Final answer
    x = 1,715.94

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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.