Home / 8,912.36-13,364.04-5,215.70

Finding the Fourth Proportional to 8,912.36, 13,364.04 and 5,215.70

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Solution

The fourth proportional to 8,912.36, 13,364.04 and 5,215.70 is: 7,820.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.36 : 13,364.04 = 5,215.70 : x
  2. Step 2: Convert to fraction form
    8,912.36/13,364.04 = 5,215.70/x
  3. Step 3: Cross multiply
    8,912.36x = 13,364.04 × 5,215.70
  4. Step 4: Simplify right side
    8,912.36x = 69,702,823.43
  5. Step 5: Solve for x
    x = 69,702,823.43/8,912.36
  6. Step 6: Final answer
    x = 7,820.92

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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.