Home / 2,876.65-3,969.75-1,617.92

Finding the Fourth Proportional to 2,876.65, 3,969.75 and 1,617.92

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Solution

The fourth proportional to 2,876.65, 3,969.75 and 1,617.92 is: 2,232.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.65 : 3,969.75 = 1,617.92 : x
  2. Step 2: Convert to fraction form
    2,876.65/3,969.75 = 1,617.92/x
  3. Step 3: Cross multiply
    2,876.65x = 3,969.75 × 1,617.92
  4. Step 4: Simplify right side
    2,876.65x = 6,422,749.98
  5. Step 5: Solve for x
    x = 6,422,749.98/2,876.65
  6. Step 6: Final answer
    x = 2,232.72

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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.