Home / 3,578.38-4,938.16-2,181.94

Finding the Fourth Proportional to 3,578.38, 4,938.16 and 2,181.94

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Solution

The fourth proportional to 3,578.38, 4,938.16 and 2,181.94 is: 3,011.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.38 : 4,938.16 = 2,181.94 : x
  2. Step 2: Convert to fraction form
    3,578.38/4,938.16 = 2,181.94/x
  3. Step 3: Cross multiply
    3,578.38x = 4,938.16 × 2,181.94
  4. Step 4: Simplify right side
    3,578.38x = 10,774,744.14
  5. Step 5: Solve for x
    x = 10,774,744.14/3,578.38
  6. Step 6: Final answer
    x = 3,011.07

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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.