Home / 2,989.12-4,487.52-1,622.08

Finding the Fourth Proportional to 2,989.12, 4,487.52 and 1,622.08

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Solution

The fourth proportional to 2,989.12, 4,487.52 and 1,622.08 is: 2,435.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.12 : 4,487.52 = 1,622.08 : x
  2. Step 2: Convert to fraction form
    2,989.12/4,487.52 = 1,622.08/x
  3. Step 3: Cross multiply
    2,989.12x = 4,487.52 × 1,622.08
  4. Step 4: Simplify right side
    2,989.12x = 7,279,116.44
  5. Step 5: Solve for x
    x = 7,279,116.44/2,989.12
  6. Step 6: Final answer
    x = 2,435.20

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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.