Home / 4,220.10-6,342.30-4,147.20

Finding the Fourth Proportional to 4,220.10, 6,342.30 and 4,147.20

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Solution

The fourth proportional to 4,220.10, 6,342.30 and 4,147.20 is: 6,232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.10 : 6,342.30 = 4,147.20 : x
  2. Step 2: Convert to fraction form
    4,220.10/6,342.30 = 4,147.20/x
  3. Step 3: Cross multiply
    4,220.10x = 6,342.30 × 4,147.20
  4. Step 4: Simplify right side
    4,220.10x = 26,302,786.56
  5. Step 5: Solve for x
    x = 26,302,786.56/4,220.10
  6. Step 6: Final answer
    x = 6,232.74

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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.