Home / 5,129.16-7,074.27-3,240.05

Finding the Fourth Proportional to 5,129.16, 7,074.27 and 3,240.05

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Solution

The fourth proportional to 5,129.16, 7,074.27 and 3,240.05 is: 4,468.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.16 : 7,074.27 = 3,240.05 : x
  2. Step 2: Convert to fraction form
    5,129.16/7,074.27 = 3,240.05/x
  3. Step 3: Cross multiply
    5,129.16x = 7,074.27 × 3,240.05
  4. Step 4: Simplify right side
    5,129.16x = 22,920,992.93
  5. Step 5: Solve for x
    x = 22,920,992.93/5,129.16
  6. Step 6: Final answer
    x = 4,468.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.