Home / 2,178.15-3,267.79-945.28

Finding the Fourth Proportional to 2,178.15, 3,267.79 and 945.28

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Solution

The fourth proportional to 2,178.15, 3,267.79 and 945.28 is: 1,418.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.15 : 3,267.79 = 945.28 : x
  2. Step 2: Convert to fraction form
    2,178.15/3,267.79 = 945.28/x
  3. Step 3: Cross multiply
    2,178.15x = 3,267.79 × 945.28
  4. Step 4: Simplify right side
    2,178.15x = 3,088,976.53
  5. Step 5: Solve for x
    x = 3,088,976.53/2,178.15
  6. Step 6: Final answer
    x = 1,418.17

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1.5x scale

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.