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Finding the Fourth Proportional to 3,738.66, 5,157.99 and 2,480.32

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Solution

The fourth proportional to 3,738.66, 5,157.99 and 2,480.32 is: 3,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.66 : 5,157.99 = 2,480.32 : x
  2. Step 2: Convert to fraction form
    3,738.66/5,157.99 = 2,480.32/x
  3. Step 3: Cross multiply
    3,738.66x = 5,157.99 × 2,480.32
  4. Step 4: Simplify right side
    3,738.66x = 12,793,465.76
  5. Step 5: Solve for x
    x = 12,793,465.76/3,738.66
  6. Step 6: Final answer
    x = 3,421.94

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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.