Home / 7,142.45-10,706.71-2,983.64

Finding the Fourth Proportional to 7,142.45, 10,706.71 and 2,983.64

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Solution

The fourth proportional to 7,142.45, 10,706.71 and 2,983.64 is: 4,472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.45 : 10,706.71 = 2,983.64 : x
  2. Step 2: Convert to fraction form
    7,142.45/10,706.71 = 2,983.64/x
  3. Step 3: Cross multiply
    7,142.45x = 10,706.71 × 2,983.64
  4. Step 4: Simplify right side
    7,142.45x = 31,944,987.53
  5. Step 5: Solve for x
    x = 31,944,987.53/7,142.45
  6. Step 6: Final answer
    x = 4,472.55

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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.