Home / 2,072.28-2,859.69-1,140.78

Finding the Fourth Proportional to 2,072.28, 2,859.69 and 1,140.78

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Solution

The fourth proportional to 2,072.28, 2,859.69 and 1,140.78 is: 1,574.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.28 : 2,859.69 = 1,140.78 : x
  2. Step 2: Convert to fraction form
    2,072.28/2,859.69 = 1,140.78/x
  3. Step 3: Cross multiply
    2,072.28x = 2,859.69 × 1,140.78
  4. Step 4: Simplify right side
    2,072.28x = 3,262,277.16
  5. Step 5: Solve for x
    x = 3,262,277.16/2,072.28
  6. Step 6: Final answer
    x = 1,574.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.