Home / 2,638.16-3,957.20-1,099.16

Finding the Fourth Proportional to 2,638.16, 3,957.20 and 1,099.16

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Solution

The fourth proportional to 2,638.16, 3,957.20 and 1,099.16 is: 1,648.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.16 : 3,957.20 = 1,099.16 : x
  2. Step 2: Convert to fraction form
    2,638.16/3,957.20 = 1,099.16/x
  3. Step 3: Cross multiply
    2,638.16x = 3,957.20 × 1,099.16
  4. Step 4: Simplify right side
    2,638.16x = 4,349,578.91
  5. Step 5: Solve for x
    x = 4,349,578.91/2,638.16
  6. Step 6: Final answer
    x = 1,648.72

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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.