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Finding the Fourth Proportional to 3,747.99, 5,168.88 and 2,420.30

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Solution

The fourth proportional to 3,747.99, 5,168.88 and 2,420.30 is: 3,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.99 : 5,168.88 = 2,420.30 : x
  2. Step 2: Convert to fraction form
    3,747.99/5,168.88 = 2,420.30/x
  3. Step 3: Cross multiply
    3,747.99x = 5,168.88 × 2,420.30
  4. Step 4: Simplify right side
    3,747.99x = 12,510,224.11
  5. Step 5: Solve for x
    x = 12,510,224.11/3,747.99
  6. Step 6: Final answer
    x = 3,337.85

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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.