Home / 5,125.15-7,687.73-1,427.39

Finding the Fourth Proportional to 5,125.15, 7,687.73 and 1,427.39

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Solution

The fourth proportional to 5,125.15, 7,687.73 and 1,427.39 is: 2,141.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.15 : 7,687.73 = 1,427.39 : x
  2. Step 2: Convert to fraction form
    5,125.15/7,687.73 = 1,427.39/x
  3. Step 3: Cross multiply
    5,125.15x = 7,687.73 × 1,427.39
  4. Step 4: Simplify right side
    5,125.15x = 10,973,343.35
  5. Step 5: Solve for x
    x = 10,973,343.35/5,125.15
  6. Step 6: Final answer
    x = 2,141.08

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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.