Home / 2,099.40-2,896.95-1,215.03

Finding the Fourth Proportional to 2,099.40, 2,896.95 and 1,215.03

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Solution

The fourth proportional to 2,099.40, 2,896.95 and 1,215.03 is: 1,676.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.40 : 2,896.95 = 1,215.03 : x
  2. Step 2: Convert to fraction form
    2,099.40/2,896.95 = 1,215.03/x
  3. Step 3: Cross multiply
    2,099.40x = 2,896.95 × 1,215.03
  4. Step 4: Simplify right side
    2,099.40x = 3,519,881.16
  5. Step 5: Solve for x
    x = 3,519,881.16/2,099.40
  6. Step 6: Final answer
    x = 1,676.61

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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.