Home / 2,989.12-4,480.80-1,528.96

Finding the Fourth Proportional to 2,989.12, 4,480.80 and 1,528.96

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Solution

The fourth proportional to 2,989.12, 4,480.80 and 1,528.96 is: 2,291.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.12 : 4,480.80 = 1,528.96 : x
  2. Step 2: Convert to fraction form
    2,989.12/4,480.80 = 1,528.96/x
  3. Step 3: Cross multiply
    2,989.12x = 4,480.80 × 1,528.96
  4. Step 4: Simplify right side
    2,989.12x = 6,850,963.97
  5. Step 5: Solve for x
    x = 6,850,963.97/2,989.12
  6. Step 6: Final answer
    x = 2,291.97

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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.