Home / 3,578.28-4,938.54-2,086.32

Finding the Fourth Proportional to 3,578.28, 4,938.54 and 2,086.32

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Solution

The fourth proportional to 3,578.28, 4,938.54 and 2,086.32 is: 2,879.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.28 : 4,938.54 = 2,086.32 : x
  2. Step 2: Convert to fraction form
    3,578.28/4,938.54 = 2,086.32/x
  3. Step 3: Cross multiply
    3,578.28x = 4,938.54 × 2,086.32
  4. Step 4: Simplify right side
    3,578.28x = 10,303,374.77
  5. Step 5: Solve for x
    x = 10,303,374.77/3,578.28
  6. Step 6: Final answer
    x = 2,879.42

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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.