Home / 8,725.24-12,039.60-5,189.86

Finding the Fourth Proportional to 8,725.24, 12,039.60 and 5,189.86

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Solution

The fourth proportional to 8,725.24, 12,039.60 and 5,189.86 is: 7,161.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.24 : 12,039.60 = 5,189.86 : x
  2. Step 2: Convert to fraction form
    8,725.24/12,039.60 = 5,189.86/x
  3. Step 3: Cross multiply
    8,725.24x = 12,039.60 × 5,189.86
  4. Step 4: Simplify right side
    8,725.24x = 62,483,838.46
  5. Step 5: Solve for x
    x = 62,483,838.46/8,725.24
  6. Step 6: Final answer
    x = 7,161.27

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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.