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Finding the Fourth Proportional to 4,747.87, 7,123.04 and 2,775.18

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Solution

The fourth proportional to 4,747.87, 7,123.04 and 2,775.18 is: 4,163.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.87 : 7,123.04 = 2,775.18 : x
  2. Step 2: Convert to fraction form
    4,747.87/7,123.04 = 2,775.18/x
  3. Step 3: Cross multiply
    4,747.87x = 7,123.04 × 2,775.18
  4. Step 4: Simplify right side
    4,747.87x = 19,767,747.72
  5. Step 5: Solve for x
    x = 19,767,747.72/4,747.87
  6. Step 6: Final answer
    x = 4,163.50

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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.