Home / 5,128.98-7,686.45-2,203.26

Finding the Fourth Proportional to 5,128.98, 7,686.45 and 2,203.26

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Solution

The fourth proportional to 5,128.98, 7,686.45 and 2,203.26 is: 3,301.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.98 : 7,686.45 = 2,203.26 : x
  2. Step 2: Convert to fraction form
    5,128.98/7,686.45 = 2,203.26/x
  3. Step 3: Cross multiply
    5,128.98x = 7,686.45 × 2,203.26
  4. Step 4: Simplify right side
    5,128.98x = 16,935,247.83
  5. Step 5: Solve for x
    x = 16,935,247.83/5,128.98
  6. Step 6: Final answer
    x = 3,301.87

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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.