Home / 2,455.88-3,381.41-2,168.13

Finding the Fourth Proportional to 2,455.88, 3,381.41 and 2,168.13

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Solution

The fourth proportional to 2,455.88, 3,381.41 and 2,168.13 is: 2,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.88 : 3,381.41 = 2,168.13 : x
  2. Step 2: Convert to fraction form
    2,455.88/3,381.41 = 2,168.13/x
  3. Step 3: Cross multiply
    2,455.88x = 3,381.41 × 2,168.13
  4. Step 4: Simplify right side
    2,455.88x = 7,331,325.62
  5. Step 5: Solve for x
    x = 7,331,325.62/2,455.88
  6. Step 6: Final answer
    x = 2,985.22

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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.