Home / 8,688.07-11,989.24-5,149.18

Finding the Fourth Proportional to 8,688.07, 11,989.24 and 5,149.18

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Solution

The fourth proportional to 8,688.07, 11,989.24 and 5,149.18 is: 7,105.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.07 : 11,989.24 = 5,149.18 : x
  2. Step 2: Convert to fraction form
    8,688.07/11,989.24 = 5,149.18/x
  3. Step 3: Cross multiply
    8,688.07x = 11,989.24 × 5,149.18
  4. Step 4: Simplify right side
    8,688.07x = 61,734,754.82
  5. Step 5: Solve for x
    x = 61,734,754.82/8,688.07
  6. Step 6: Final answer
    x = 7,105.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.