Home / 4,151.10-6,238.80-4,078.20

Finding the Fourth Proportional to 4,151.10, 6,238.80 and 4,078.20

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Solution

The fourth proportional to 4,151.10, 6,238.80 and 4,078.20 is: 6,129.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,151.10 : 6,238.80 = 4,078.20 : x
  2. Step 2: Convert to fraction form
    4,151.10/6,238.80 = 4,078.20/x
  3. Step 3: Cross multiply
    4,151.10x = 6,238.80 × 4,078.20
  4. Step 4: Simplify right side
    4,151.10x = 25,443,074.16
  5. Step 5: Solve for x
    x = 25,443,074.16/4,151.10
  6. Step 6: Final answer
    x = 6,129.24

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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.