Home / 3,155.31-4,354.38-1,960.47

Finding the Fourth Proportional to 3,155.31, 4,354.38 and 1,960.47

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Solution

The fourth proportional to 3,155.31, 4,354.38 and 1,960.47 is: 2,705.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.31 : 4,354.38 = 1,960.47 : x
  2. Step 2: Convert to fraction form
    3,155.31/4,354.38 = 1,960.47/x
  3. Step 3: Cross multiply
    3,155.31x = 4,354.38 × 1,960.47
  4. Step 4: Simplify right side
    3,155.31x = 8,536,631.36
  5. Step 5: Solve for x
    x = 8,536,631.36/3,155.31
  6. Step 6: Final answer
    x = 2,705.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.