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Finding the Fourth Proportional to 3,687, 5,088.11 and 2,115.24

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Solution

The fourth proportional to 3,687, 5,088.11 and 2,115.24 is: 2,919.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687 : 5,088.11 = 2,115.24 : x
  2. Step 2: Convert to fraction form
    3,687/5,088.11 = 2,115.24/x
  3. Step 3: Cross multiply
    3,687x = 5,088.11 × 2,115.24
  4. Step 4: Simplify right side
    3,687x = 10,762,563.22
  5. Step 5: Solve for x
    x = 10,762,563.22/3,687
  6. Step 6: Final answer
    x = 2,919.06

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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.