Home / 4,145.38-6,218.34-1,680.15

Finding the Fourth Proportional to 4,145.38, 6,218.34 and 1,680.15

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Solution

The fourth proportional to 4,145.38, 6,218.34 and 1,680.15 is: 2,520.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.38 : 6,218.34 = 1,680.15 : x
  2. Step 2: Convert to fraction form
    4,145.38/6,218.34 = 1,680.15/x
  3. Step 3: Cross multiply
    4,145.38x = 6,218.34 × 1,680.15
  4. Step 4: Simplify right side
    4,145.38x = 10,447,712.86
  5. Step 5: Solve for x
    x = 10,447,712.86/4,145.38
  6. Step 6: Final answer
    x = 2,520.33

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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.