Home / 3,578.42-4,938.81-2,181.08

Finding the Fourth Proportional to 3,578.42, 4,938.81 and 2,181.08

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Solution

The fourth proportional to 3,578.42, 4,938.81 and 2,181.08 is: 3,010.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.42 : 4,938.81 = 2,181.08 : x
  2. Step 2: Convert to fraction form
    3,578.42/4,938.81 = 2,181.08/x
  3. Step 3: Cross multiply
    3,578.42x = 4,938.81 × 2,181.08
  4. Step 4: Simplify right side
    3,578.42x = 10,771,939.71
  5. Step 5: Solve for x
    x = 10,771,939.71/3,578.42
  6. Step 6: Final answer
    x = 3,010.25

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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.