Home / 3,137.31-4,705.35-2,981.20

Finding the Fourth Proportional to 3,137.31, 4,705.35 and 2,981.20

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Solution

The fourth proportional to 3,137.31, 4,705.35 and 2,981.20 is: 4,471.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.31 : 4,705.35 = 2,981.20 : x
  2. Step 2: Convert to fraction form
    3,137.31/4,705.35 = 2,981.20/x
  3. Step 3: Cross multiply
    3,137.31x = 4,705.35 × 2,981.20
  4. Step 4: Simplify right side
    3,137.31x = 14,027,589.42
  5. Step 5: Solve for x
    x = 14,027,589.42/3,137.31
  6. Step 6: Final answer
    x = 4,471.22

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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.