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Finding the Fourth Proportional to 5,154.87, 7,736.41 and 1,868.91

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Solution

The fourth proportional to 5,154.87, 7,736.41 and 1,868.91 is: 2,804.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,154.87 : 7,736.41 = 1,868.91 : x
  2. Step 2: Convert to fraction form
    5,154.87/7,736.41 = 1,868.91/x
  3. Step 3: Cross multiply
    5,154.87x = 7,736.41 × 1,868.91
  4. Step 4: Simplify right side
    5,154.87x = 14,458,654.01
  5. Step 5: Solve for x
    x = 14,458,654.01/5,154.87
  6. Step 6: Final answer
    x = 2,804.85

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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.