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Finding the Fourth Proportional to 5,221.81, 7,833.03 and 1,890.79

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Solution

The fourth proportional to 5,221.81, 7,833.03 and 1,890.79 is: 2,836.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.81 : 7,833.03 = 1,890.79 : x
  2. Step 2: Convert to fraction form
    5,221.81/7,833.03 = 1,890.79/x
  3. Step 3: Cross multiply
    5,221.81x = 7,833.03 × 1,890.79
  4. Step 4: Simplify right side
    5,221.81x = 14,810,614.79
  5. Step 5: Solve for x
    x = 14,810,614.79/5,221.81
  6. Step 6: Final answer
    x = 2,836.30

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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.