Home / 3,916.32-5,403.60-2,866.56

Finding the Fourth Proportional to 3,916.32, 5,403.60 and 2,866.56

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Solution

The fourth proportional to 3,916.32, 5,403.60 and 2,866.56 is: 3,955.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.32 : 5,403.60 = 2,866.56 : x
  2. Step 2: Convert to fraction form
    3,916.32/5,403.60 = 2,866.56/x
  3. Step 3: Cross multiply
    3,916.32x = 5,403.60 × 2,866.56
  4. Step 4: Simplify right side
    3,916.32x = 15,489,743.62
  5. Step 5: Solve for x
    x = 15,489,743.62/3,916.32
  6. Step 6: Final answer
    x = 3,955.18

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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.