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Finding the Fourth Proportional to 1,806.62, 2,490.98 and 1,508.30

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Solution

The fourth proportional to 1,806.62, 2,490.98 and 1,508.30 is: 2,079.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.62 : 2,490.98 = 1,508.30 : x
  2. Step 2: Convert to fraction form
    1,806.62/2,490.98 = 1,508.30/x
  3. Step 3: Cross multiply
    1,806.62x = 2,490.98 × 1,508.30
  4. Step 4: Simplify right side
    1,806.62x = 3,757,131.71
  5. Step 5: Solve for x
    x = 3,757,131.71/1,806.62
  6. Step 6: Final answer
    x = 2,079.65

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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.