Home / 8,721.28-13,063.86-4,265.54

Finding the Fourth Proportional to 8,721.28, 13,063.86 and 4,265.54

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Solution

The fourth proportional to 8,721.28, 13,063.86 and 4,265.54 is: 6,389.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.28 : 13,063.86 = 4,265.54 : x
  2. Step 2: Convert to fraction form
    8,721.28/13,063.86 = 4,265.54/x
  3. Step 3: Cross multiply
    8,721.28x = 13,063.86 × 4,265.54
  4. Step 4: Simplify right side
    8,721.28x = 55,724,417.38
  5. Step 5: Solve for x
    x = 55,724,417.38/8,721.28
  6. Step 6: Final answer
    x = 6,389.48

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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.