Home / 3,618.24-5,428.98-1,671.90

Finding the Fourth Proportional to 3,618.24, 5,428.98 and 1,671.90

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Solution

The fourth proportional to 3,618.24, 5,428.98 and 1,671.90 is: 2,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.24 : 5,428.98 = 1,671.90 : x
  2. Step 2: Convert to fraction form
    3,618.24/5,428.98 = 1,671.90/x
  3. Step 3: Cross multiply
    3,618.24x = 5,428.98 × 1,671.90
  4. Step 4: Simplify right side
    3,618.24x = 9,076,711.66
  5. Step 5: Solve for x
    x = 9,076,711.66/3,618.24
  6. Step 6: Final answer
    x = 2,508.60

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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.