Home / 4,215.74-6,315.39-2,568.20

Finding the Fourth Proportional to 4,215.74, 6,315.39 and 2,568.20

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Solution

The fourth proportional to 4,215.74, 6,315.39 and 2,568.20 is: 3,847.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.74 : 6,315.39 = 2,568.20 : x
  2. Step 2: Convert to fraction form
    4,215.74/6,315.39 = 2,568.20/x
  3. Step 3: Cross multiply
    4,215.74x = 6,315.39 × 2,568.20
  4. Step 4: Simplify right side
    4,215.74x = 16,219,153.02
  5. Step 5: Solve for x
    x = 16,219,153.02/4,215.74
  6. Step 6: Final answer
    x = 3,847.29

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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.