Home / 2,098.90-2,896.86-1,215.19

Finding the Fourth Proportional to 2,098.90, 2,896.86 and 1,215.19

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Solution

The fourth proportional to 2,098.90, 2,896.86 and 1,215.19 is: 1,677.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.90 : 2,896.86 = 1,215.19 : x
  2. Step 2: Convert to fraction form
    2,098.90/2,896.86 = 1,215.19/x
  3. Step 3: Cross multiply
    2,098.90x = 2,896.86 × 1,215.19
  4. Step 4: Simplify right side
    2,098.90x = 3,520,235.30
  5. Step 5: Solve for x
    x = 3,520,235.30/2,098.90
  6. Step 6: Final answer
    x = 1,677.18

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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.