Home / 3,889.90-5,835.98-1,257.35

Finding the Fourth Proportional to 3,889.90, 5,835.98 and 1,257.35

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Solution

The fourth proportional to 3,889.90, 5,835.98 and 1,257.35 is: 1,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.90 : 5,835.98 = 1,257.35 : x
  2. Step 2: Convert to fraction form
    3,889.90/5,835.98 = 1,257.35/x
  3. Step 3: Cross multiply
    3,889.90x = 5,835.98 × 1,257.35
  4. Step 4: Simplify right side
    3,889.90x = 7,337,869.45
  5. Step 5: Solve for x
    x = 7,337,869.45/3,889.90
  6. Step 6: Final answer
    x = 1,886.39

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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.