Home / 1,616.20-2,424.48-691.60

Finding the Fourth Proportional to 1,616.20, 2,424.48 and 691.60

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Solution

The fourth proportional to 1,616.20, 2,424.48 and 691.60 is: 1,037.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616.20 : 2,424.48 = 691.60 : x
  2. Step 2: Convert to fraction form
    1,616.20/2,424.48 = 691.60/x
  3. Step 3: Cross multiply
    1,616.20x = 2,424.48 × 691.60
  4. Step 4: Simplify right side
    1,616.20x = 1,676,770.37
  5. Step 5: Solve for x
    x = 1,676,770.37/1,616.20
  6. Step 6: Final answer
    x = 1,037.48

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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.