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Finding the Fourth Proportional to 2,529, 3,490.38 and 2,418.30

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Solution

The fourth proportional to 2,529, 3,490.38 and 2,418.30 is: 3,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529 : 3,490.38 = 2,418.30 : x
  2. Step 2: Convert to fraction form
    2,529/3,490.38 = 2,418.30/x
  3. Step 3: Cross multiply
    2,529x = 3,490.38 × 2,418.30
  4. Step 4: Simplify right side
    2,529x = 8,440,785.95
  5. Step 5: Solve for x
    x = 8,440,785.95/2,529
  6. Step 6: Final answer
    x = 3,337.60

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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.