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Finding the Fourth Proportional to 5,145.50, 7,102 and 3,050.84

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Solution

The fourth proportional to 5,145.50, 7,102 and 3,050.84 is: 4,210.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.50 : 7,102 = 3,050.84 : x
  2. Step 2: Convert to fraction form
    5,145.50/7,102 = 3,050.84/x
  3. Step 3: Cross multiply
    5,145.50x = 7,102 × 3,050.84
  4. Step 4: Simplify right side
    5,145.50x = 21,667,065.68
  5. Step 5: Solve for x
    x = 21,667,065.68/5,145.50
  6. Step 6: Final answer
    x = 4,210.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.