Home / 5,361.32-8,031.78-2,579.78

Finding the Fourth Proportional to 5,361.32, 8,031.78 and 2,579.78

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Solution

The fourth proportional to 5,361.32, 8,031.78 and 2,579.78 is: 3,864.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,361.32 : 8,031.78 = 2,579.78 : x
  2. Step 2: Convert to fraction form
    5,361.32/8,031.78 = 2,579.78/x
  3. Step 3: Cross multiply
    5,361.32x = 8,031.78 × 2,579.78
  4. Step 4: Simplify right side
    5,361.32x = 20,720,225.41
  5. Step 5: Solve for x
    x = 20,720,225.41/5,361.32
  6. Step 6: Final answer
    x = 3,864.76

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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.