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Finding the Fourth Proportional to 3,718.44, 5,138.64 and 3,008.88

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Solution

The fourth proportional to 3,718.44, 5,138.64 and 3,008.88 is: 4,158.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.44 : 5,138.64 = 3,008.88 : x
  2. Step 2: Convert to fraction form
    3,718.44/5,138.64 = 3,008.88/x
  3. Step 3: Cross multiply
    3,718.44x = 5,138.64 × 3,008.88
  4. Step 4: Simplify right side
    3,718.44x = 15,461,551.12
  5. Step 5: Solve for x
    x = 15,461,551.12/3,718.44
  6. Step 6: Final answer
    x = 4,158.07

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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.