Home / 3,124.72-4,311.68-1,798.32

Finding the Fourth Proportional to 3,124.72, 4,311.68 and 1,798.32

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Solution

The fourth proportional to 3,124.72, 4,311.68 and 1,798.32 is: 2,481.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.72 : 4,311.68 = 1,798.32 : x
  2. Step 2: Convert to fraction form
    3,124.72/4,311.68 = 1,798.32/x
  3. Step 3: Cross multiply
    3,124.72x = 4,311.68 × 1,798.32
  4. Step 4: Simplify right side
    3,124.72x = 7,753,780.38
  5. Step 5: Solve for x
    x = 7,753,780.38/3,124.72
  6. Step 6: Final answer
    x = 2,481.43

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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.