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Finding the Fourth Proportional to 3,686.70, 5,087.70 and 2,008.11

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Solution

The fourth proportional to 3,686.70, 5,087.70 and 2,008.11 is: 2,771.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.70 : 5,087.70 = 2,008.11 : x
  2. Step 2: Convert to fraction form
    3,686.70/5,087.70 = 2,008.11/x
  3. Step 3: Cross multiply
    3,686.70x = 5,087.70 × 2,008.11
  4. Step 4: Simplify right side
    3,686.70x = 10,216,661.25
  5. Step 5: Solve for x
    x = 10,216,661.25/3,686.70
  6. Step 6: Final answer
    x = 2,771.22

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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.