Home / 3,178.60-4,767.90-3,135.40

Finding the Fourth Proportional to 3,178.60, 4,767.90 and 3,135.40

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Solution

The fourth proportional to 3,178.60, 4,767.90 and 3,135.40 is: 4,703.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.60 : 4,767.90 = 3,135.40 : x
  2. Step 2: Convert to fraction form
    3,178.60/4,767.90 = 3,135.40/x
  3. Step 3: Cross multiply
    3,178.60x = 4,767.90 × 3,135.40
  4. Step 4: Simplify right side
    3,178.60x = 14,949,273.66
  5. Step 5: Solve for x
    x = 14,949,273.66/3,178.60
  6. Step 6: Final answer
    x = 4,703.10

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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.