Home / 3,138.57-4,707.21-2,982.45

Finding the Fourth Proportional to 3,138.57, 4,707.21 and 2,982.45

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Solution

The fourth proportional to 3,138.57, 4,707.21 and 2,982.45 is: 4,473.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.57 : 4,707.21 = 2,982.45 : x
  2. Step 2: Convert to fraction form
    3,138.57/4,707.21 = 2,982.45/x
  3. Step 3: Cross multiply
    3,138.57x = 4,707.21 × 2,982.45
  4. Step 4: Simplify right side
    3,138.57x = 14,039,018.46
  5. Step 5: Solve for x
    x = 14,039,018.46/3,138.57
  6. Step 6: Final answer
    x = 4,473.06

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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.