Home / 2,521.64-3,788.39-2,381.78

Finding the Fourth Proportional to 2,521.64, 3,788.39 and 2,381.78

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Solution

The fourth proportional to 2,521.64, 3,788.39 and 2,381.78 is: 3,578.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.64 : 3,788.39 = 2,381.78 : x
  2. Step 2: Convert to fraction form
    2,521.64/3,788.39 = 2,381.78/x
  3. Step 3: Cross multiply
    2,521.64x = 3,788.39 × 2,381.78
  4. Step 4: Simplify right side
    2,521.64x = 9,023,126.96
  5. Step 5: Solve for x
    x = 9,023,126.96/2,521.64
  6. Step 6: Final answer
    x = 3,578.27

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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.