Home / 3,964.80-5,946.24-1,332.40

Finding the Fourth Proportional to 3,964.80, 5,946.24 and 1,332.40

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Solution

The fourth proportional to 3,964.80, 5,946.24 and 1,332.40 is: 1,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,964.80 : 5,946.24 = 1,332.40 : x
  2. Step 2: Convert to fraction form
    3,964.80/5,946.24 = 1,332.40/x
  3. Step 3: Cross multiply
    3,964.80x = 5,946.24 × 1,332.40
  4. Step 4: Simplify right side
    3,964.80x = 7,922,770.18
  5. Step 5: Solve for x
    x = 7,922,770.18/3,964.80
  6. Step 6: Final answer
    x = 1,998.28

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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.