Home / 2,178.22-3,266.70-945.40

Finding the Fourth Proportional to 2,178.22, 3,266.70 and 945.40

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Solution

The fourth proportional to 2,178.22, 3,266.70 and 945.40 is: 1,417.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.22 : 3,266.70 = 945.40 : x
  2. Step 2: Convert to fraction form
    2,178.22/3,266.70 = 945.40/x
  3. Step 3: Cross multiply
    2,178.22x = 3,266.70 × 945.40
  4. Step 4: Simplify right side
    2,178.22x = 3,088,338.18
  5. Step 5: Solve for x
    x = 3,088,338.18/2,178.22
  6. Step 6: Final answer
    x = 1,417.83

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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.