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Finding the Fourth Proportional to 3,866.56, 5,800.64 and 1,890.24

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Solution

The fourth proportional to 3,866.56, 5,800.64 and 1,890.24 is: 2,835.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.56 : 5,800.64 = 1,890.24 : x
  2. Step 2: Convert to fraction form
    3,866.56/5,800.64 = 1,890.24/x
  3. Step 3: Cross multiply
    3,866.56x = 5,800.64 × 1,890.24
  4. Step 4: Simplify right side
    3,866.56x = 10,964,601.75
  5. Step 5: Solve for x
    x = 10,964,601.75/3,866.56
  6. Step 6: Final answer
    x = 2,835.75

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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.