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Finding the Fourth Proportional to 3,144.99, 4,721.13 and 1,686.99

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Solution

The fourth proportional to 3,144.99, 4,721.13 and 1,686.99 is: 2,532.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.99 : 4,721.13 = 1,686.99 : x
  2. Step 2: Convert to fraction form
    3,144.99/4,721.13 = 1,686.99/x
  3. Step 3: Cross multiply
    3,144.99x = 4,721.13 × 1,686.99
  4. Step 4: Simplify right side
    3,144.99x = 7,964,499.10
  5. Step 5: Solve for x
    x = 7,964,499.10/3,144.99
  6. Step 6: Final answer
    x = 2,532.44

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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.