Home / 1,620.18-2,431.44-1,098.94

Finding the Fourth Proportional to 1,620.18, 2,431.44 and 1,098.94

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Solution

The fourth proportional to 1,620.18, 2,431.44 and 1,098.94 is: 1,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.18 : 2,431.44 = 1,098.94 : x
  2. Step 2: Convert to fraction form
    1,620.18/2,431.44 = 1,098.94/x
  3. Step 3: Cross multiply
    1,620.18x = 2,431.44 × 1,098.94
  4. Step 4: Simplify right side
    1,620.18x = 2,672,006.67
  5. Step 5: Solve for x
    x = 2,672,006.67/1,620.18
  6. Step 6: Final answer
    x = 1,649.20

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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.