Home / 2,774.81-3,829.18-1,515.88

Finding the Fourth Proportional to 2,774.81, 3,829.18 and 1,515.88

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Solution

The fourth proportional to 2,774.81, 3,829.18 and 1,515.88 is: 2,091.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.81 : 3,829.18 = 1,515.88 : x
  2. Step 2: Convert to fraction form
    2,774.81/3,829.18 = 1,515.88/x
  3. Step 3: Cross multiply
    2,774.81x = 3,829.18 × 1,515.88
  4. Step 4: Simplify right side
    2,774.81x = 5,804,559.18
  5. Step 5: Solve for x
    x = 5,804,559.18/2,774.81
  6. Step 6: Final answer
    x = 2,091.87

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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.