Home / 5,125.08-7,680.72-3,144.48

Finding the Fourth Proportional to 5,125.08, 7,680.72 and 3,144.48

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Solution

The fourth proportional to 5,125.08, 7,680.72 and 3,144.48 is: 4,712.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.08 : 7,680.72 = 3,144.48 : x
  2. Step 2: Convert to fraction form
    5,125.08/7,680.72 = 3,144.48/x
  3. Step 3: Cross multiply
    5,125.08x = 7,680.72 × 3,144.48
  4. Step 4: Simplify right side
    5,125.08x = 24,151,870.43
  5. Step 5: Solve for x
    x = 24,151,870.43/5,125.08
  6. Step 6: Final answer
    x = 4,712.49

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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.