Home / 7,801.28-11,700.66-2,869.70

Finding the Fourth Proportional to 7,801.28, 11,700.66 and 2,869.70

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Solution

The fourth proportional to 7,801.28, 11,700.66 and 2,869.70 is: 4,304.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801.28 : 11,700.66 = 2,869.70 : x
  2. Step 2: Convert to fraction form
    7,801.28/11,700.66 = 2,869.70/x
  3. Step 3: Cross multiply
    7,801.28x = 11,700.66 × 2,869.70
  4. Step 4: Simplify right side
    7,801.28x = 33,577,384.00
  5. Step 5: Solve for x
    x = 33,577,384.00/7,801.28
  6. Step 6: Final answer
    x = 4,304.09

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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.