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Finding the Fourth Proportional to 3,720.99, 5,134.90 and 2,042.39

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Solution

The fourth proportional to 3,720.99, 5,134.90 and 2,042.39 is: 2,818.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.99 : 5,134.90 = 2,042.39 : x
  2. Step 2: Convert to fraction form
    3,720.99/5,134.90 = 2,042.39/x
  3. Step 3: Cross multiply
    3,720.99x = 5,134.90 × 2,042.39
  4. Step 4: Simplify right side
    3,720.99x = 10,487,468.41
  5. Step 5: Solve for x
    x = 10,487,468.41/3,720.99
  6. Step 6: Final answer
    x = 2,818.46

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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.