Home / 3,619.18-5,428.16-1,644.20

Finding the Fourth Proportional to 3,619.18, 5,428.16 and 1,644.20

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Solution

The fourth proportional to 3,619.18, 5,428.16 and 1,644.20 is: 2,466.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.18 : 5,428.16 = 1,644.20 : x
  2. Step 2: Convert to fraction form
    3,619.18/5,428.16 = 1,644.20/x
  3. Step 3: Cross multiply
    3,619.18x = 5,428.16 × 1,644.20
  4. Step 4: Simplify right side
    3,619.18x = 8,924,980.67
  5. Step 5: Solve for x
    x = 8,924,980.67/3,619.18
  6. Step 6: Final answer
    x = 2,466.02

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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.