Home / 3,156.60-4,734.96-1,857.12

Finding the Fourth Proportional to 3,156.60, 4,734.96 and 1,857.12

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Solution

The fourth proportional to 3,156.60, 4,734.96 and 1,857.12 is: 2,785.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.60 : 4,734.96 = 1,857.12 : x
  2. Step 2: Convert to fraction form
    3,156.60/4,734.96 = 1,857.12/x
  3. Step 3: Cross multiply
    3,156.60x = 4,734.96 × 1,857.12
  4. Step 4: Simplify right side
    3,156.60x = 8,793,388.92
  5. Step 5: Solve for x
    x = 8,793,388.92/3,156.60
  6. Step 6: Final answer
    x = 2,785.72

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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.