Home / 5,125.19-7,686.93-1,427.79

Finding the Fourth Proportional to 5,125.19, 7,686.93 and 1,427.79

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Solution

The fourth proportional to 5,125.19, 7,686.93 and 1,427.79 is: 2,141.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.19 : 7,686.93 = 1,427.79 : x
  2. Step 2: Convert to fraction form
    5,125.19/7,686.93 = 1,427.79/x
  3. Step 3: Cross multiply
    5,125.19x = 7,686.93 × 1,427.79
  4. Step 4: Simplify right side
    5,125.19x = 10,975,321.78
  5. Step 5: Solve for x
    x = 10,975,321.78/5,125.19
  6. Step 6: Final answer
    x = 2,141.45

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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.