Home / 2,616.90-3,916.02-1,921.92

Finding the Fourth Proportional to 2,616.90, 3,916.02 and 1,921.92

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Solution

The fourth proportional to 2,616.90, 3,916.02 and 1,921.92 is: 2,876.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.90 : 3,916.02 = 1,921.92 : x
  2. Step 2: Convert to fraction form
    2,616.90/3,916.02 = 1,921.92/x
  3. Step 3: Cross multiply
    2,616.90x = 3,916.02 × 1,921.92
  4. Step 4: Simplify right side
    2,616.90x = 7,526,277.16
  5. Step 5: Solve for x
    x = 7,526,277.16/2,616.90
  6. Step 6: Final answer
    x = 2,876.03

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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.