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Finding the Fourth Proportional to 3,889.98, 5,834.77 and 1,257.62

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Solution

The fourth proportional to 3,889.98, 5,834.77 and 1,257.62 is: 1,886.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.98 : 5,834.77 = 1,257.62 : x
  2. Step 2: Convert to fraction form
    3,889.98/5,834.77 = 1,257.62/x
  3. Step 3: Cross multiply
    3,889.98x = 5,834.77 × 1,257.62
  4. Step 4: Simplify right side
    3,889.98x = 7,337,891.13
  5. Step 5: Solve for x
    x = 7,337,891.13/3,889.98
  6. Step 6: Final answer
    x = 1,886.36

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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.