Home / 8,725.40-12,039.42-5,189.48

Finding the Fourth Proportional to 8,725.40, 12,039.42 and 5,189.48

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Solution

The fourth proportional to 8,725.40, 12,039.42 and 5,189.48 is: 7,160.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.40 : 12,039.42 = 5,189.48 : x
  2. Step 2: Convert to fraction form
    8,725.40/12,039.42 = 5,189.48/x
  3. Step 3: Cross multiply
    8,725.40x = 12,039.42 × 5,189.48
  4. Step 4: Simplify right side
    8,725.40x = 62,478,329.30
  5. Step 5: Solve for x
    x = 62,478,329.30/8,725.40
  6. Step 6: Final answer
    x = 7,160.51

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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.