Home / 6,620.02-9,929.99-1,689.62

Finding the Fourth Proportional to 6,620.02, 9,929.99 and 1,689.62

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Solution

The fourth proportional to 6,620.02, 9,929.99 and 1,689.62 is: 2,534.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.02 : 9,929.99 = 1,689.62 : x
  2. Step 2: Convert to fraction form
    6,620.02/9,929.99 = 1,689.62/x
  3. Step 3: Cross multiply
    6,620.02x = 9,929.99 × 1,689.62
  4. Step 4: Simplify right side
    6,620.02x = 16,777,909.70
  5. Step 5: Solve for x
    x = 16,777,909.70/6,620.02
  6. Step 6: Final answer
    x = 2,534.42

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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.