Home / 5,126.20-7,690.50-1,663.44

Finding the Fourth Proportional to 5,126.20, 7,690.50 and 1,663.44

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Solution

The fourth proportional to 5,126.20, 7,690.50 and 1,663.44 is: 2,495.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.20 : 7,690.50 = 1,663.44 : x
  2. Step 2: Convert to fraction form
    5,126.20/7,690.50 = 1,663.44/x
  3. Step 3: Cross multiply
    5,126.20x = 7,690.50 × 1,663.44
  4. Step 4: Simplify right side
    5,126.20x = 12,792,685.32
  5. Step 5: Solve for x
    x = 12,792,685.32/5,126.20
  6. Step 6: Final answer
    x = 2,495.55

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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.