Home / 4,213.21-6,315.11-1,578.18

Finding the Fourth Proportional to 4,213.21, 6,315.11 and 1,578.18

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Solution

The fourth proportional to 4,213.21, 6,315.11 and 1,578.18 is: 2,365.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,213.21 : 6,315.11 = 1,578.18 : x
  2. Step 2: Convert to fraction form
    4,213.21/6,315.11 = 1,578.18/x
  3. Step 3: Cross multiply
    4,213.21x = 6,315.11 × 1,578.18
  4. Step 4: Simplify right side
    4,213.21x = 9,966,372.41
  5. Step 5: Solve for x
    x = 9,966,372.41/4,213.21
  6. Step 6: Final answer
    x = 2,365.51

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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.