Home / 3,178.25-4,767.40-1,305.17

Finding the Fourth Proportional to 3,178.25, 4,767.40 and 1,305.17

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Solution

The fourth proportional to 3,178.25, 4,767.40 and 1,305.17 is: 1,957.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.25 : 4,767.40 = 1,305.17 : x
  2. Step 2: Convert to fraction form
    3,178.25/4,767.40 = 1,305.17/x
  3. Step 3: Cross multiply
    3,178.25x = 4,767.40 × 1,305.17
  4. Step 4: Simplify right side
    3,178.25x = 6,222,267.46
  5. Step 5: Solve for x
    x = 6,222,267.46/3,178.25
  6. Step 6: Final answer
    x = 1,957.77

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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.