Home / 3,916.12-5,403.74-2,147.62

Finding the Fourth Proportional to 3,916.12, 5,403.74 and 2,147.62

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Solution

The fourth proportional to 3,916.12, 5,403.74 and 2,147.62 is: 2,963.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.12 : 5,403.74 = 2,147.62 : x
  2. Step 2: Convert to fraction form
    3,916.12/5,403.74 = 2,147.62/x
  3. Step 3: Cross multiply
    3,916.12x = 5,403.74 × 2,147.62
  4. Step 4: Simplify right side
    3,916.12x = 11,605,180.10
  5. Step 5: Solve for x
    x = 11,605,180.10/3,916.12
  6. Step 6: Final answer
    x = 2,963.44

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1.5x scale

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.