Home / 5,415.65-8,125.29-2,491.75

Finding the Fourth Proportional to 5,415.65, 8,125.29 and 2,491.75

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Solution

The fourth proportional to 5,415.65, 8,125.29 and 2,491.75 is: 3,738.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.65 : 8,125.29 = 2,491.75 : x
  2. Step 2: Convert to fraction form
    5,415.65/8,125.29 = 2,491.75/x
  3. Step 3: Cross multiply
    5,415.65x = 8,125.29 × 2,491.75
  4. Step 4: Simplify right side
    5,415.65x = 20,246,191.36
  5. Step 5: Solve for x
    x = 20,246,191.36/5,415.65
  6. Step 6: Final answer
    x = 3,738.46

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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.