Home / 2,078.28-3,116.70-1,155.24

Finding the Fourth Proportional to 2,078.28, 3,116.70 and 1,155.24

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Solution

The fourth proportional to 2,078.28, 3,116.70 and 1,155.24 is: 1,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.28 : 3,116.70 = 1,155.24 : x
  2. Step 2: Convert to fraction form
    2,078.28/3,116.70 = 1,155.24/x
  3. Step 3: Cross multiply
    2,078.28x = 3,116.70 × 1,155.24
  4. Step 4: Simplify right side
    2,078.28x = 3,600,536.51
  5. Step 5: Solve for x
    x = 3,600,536.51/2,078.28
  6. Step 6: Final answer
    x = 1,732.46

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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.