Home / 3,421.10-5,131.56-955.87

Finding the Fourth Proportional to 3,421.10, 5,131.56 and 955.87

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Solution

The fourth proportional to 3,421.10, 5,131.56 and 955.87 is: 1,433.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.10 : 5,131.56 = 955.87 : x
  2. Step 2: Convert to fraction form
    3,421.10/5,131.56 = 955.87/x
  3. Step 3: Cross multiply
    3,421.10x = 5,131.56 × 955.87
  4. Step 4: Simplify right side
    3,421.10x = 4,905,095.01
  5. Step 5: Solve for x
    x = 4,905,095.01/3,421.10
  6. Step 6: Final answer
    x = 1,433.78

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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.