Home / 8,816.51-13,236.50-5,121.38

Finding the Fourth Proportional to 8,816.51, 13,236.50 and 5,121.38

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Solution

The fourth proportional to 8,816.51, 13,236.50 and 5,121.38 is: 7,688.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,816.51 : 13,236.50 = 5,121.38 : x
  2. Step 2: Convert to fraction form
    8,816.51/13,236.50 = 5,121.38/x
  3. Step 3: Cross multiply
    8,816.51x = 13,236.50 × 5,121.38
  4. Step 4: Simplify right side
    8,816.51x = 67,789,192.26
  5. Step 5: Solve for x
    x = 67,789,192.26/8,816.51
  6. Step 6: Final answer
    x = 7,688.89

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1.5x scale

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.