Home / 5,125.92-7,681.05-2,661.54

Finding the Fourth Proportional to 5,125.92, 7,681.05 and 2,661.54

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Solution

The fourth proportional to 5,125.92, 7,681.05 and 2,661.54 is: 3,988.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.92 : 7,681.05 = 2,661.54 : x
  2. Step 2: Convert to fraction form
    5,125.92/7,681.05 = 2,661.54/x
  3. Step 3: Cross multiply
    5,125.92x = 7,681.05 × 2,661.54
  4. Step 4: Simplify right side
    5,125.92x = 20,443,421.82
  5. Step 5: Solve for x
    x = 20,443,421.82/5,125.92
  6. Step 6: Final answer
    x = 3,988.24

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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.