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Finding the Fourth Proportional to 7,795.71, 11,686.65 and 2,864.20

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Solution

The fourth proportional to 7,795.71, 11,686.65 and 2,864.20 is: 4,293.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,795.71 : 11,686.65 = 2,864.20 : x
  2. Step 2: Convert to fraction form
    7,795.71/11,686.65 = 2,864.20/x
  3. Step 3: Cross multiply
    7,795.71x = 11,686.65 × 2,864.20
  4. Step 4: Simplify right side
    7,795.71x = 33,472,902.93
  5. Step 5: Solve for x
    x = 33,472,902.93/7,795.71
  6. Step 6: Final answer
    x = 4,293.76

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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.