Home / 8,828.75-13,225.81-5,123.21

Finding the Fourth Proportional to 8,828.75, 13,225.81 and 5,123.21

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Solution

The fourth proportional to 8,828.75, 13,225.81 and 5,123.21 is: 7,674.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,828.75 : 13,225.81 = 5,123.21 : x
  2. Step 2: Convert to fraction form
    8,828.75/13,225.81 = 5,123.21/x
  3. Step 3: Cross multiply
    8,828.75x = 13,225.81 × 5,123.21
  4. Step 4: Simplify right side
    8,828.75x = 67,758,523.11
  5. Step 5: Solve for x
    x = 67,758,523.11/8,828.75
  6. Step 6: Final answer
    x = 7,674.76

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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.