Home / 2,616.63-3,916.40-1,923.12

Finding the Fourth Proportional to 2,616.63, 3,916.40 and 1,923.12

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Solution

The fourth proportional to 2,616.63, 3,916.40 and 1,923.12 is: 2,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.63 : 3,916.40 = 1,923.12 : x
  2. Step 2: Convert to fraction form
    2,616.63/3,916.40 = 1,923.12/x
  3. Step 3: Cross multiply
    2,616.63x = 3,916.40 × 1,923.12
  4. Step 4: Simplify right side
    2,616.63x = 7,531,687.59
  5. Step 5: Solve for x
    x = 7,531,687.59/2,616.63
  6. Step 6: Final answer
    x = 2,878.39

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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.