Home / 3,880.05-5,810.81-2,122.43

Finding the Fourth Proportional to 3,880.05, 5,810.81 and 2,122.43

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Solution

The fourth proportional to 3,880.05, 5,810.81 and 2,122.43 is: 3,178.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.05 : 5,810.81 = 2,122.43 : x
  2. Step 2: Convert to fraction form
    3,880.05/5,810.81 = 2,122.43/x
  3. Step 3: Cross multiply
    3,880.05x = 5,810.81 × 2,122.43
  4. Step 4: Simplify right side
    3,880.05x = 12,333,032.05
  5. Step 5: Solve for x
    x = 12,333,032.05/3,880.05
  6. Step 6: Final answer
    x = 3,178.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.