Home / 7,725.90-10,661.70-4,189.14

Finding the Fourth Proportional to 7,725.90, 10,661.70 and 4,189.14

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Solution

The fourth proportional to 7,725.90, 10,661.70 and 4,189.14 is: 5,780.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.90 : 10,661.70 = 4,189.14 : x
  2. Step 2: Convert to fraction form
    7,725.90/10,661.70 = 4,189.14/x
  3. Step 3: Cross multiply
    7,725.90x = 10,661.70 × 4,189.14
  4. Step 4: Simplify right side
    7,725.90x = 44,663,353.94
  5. Step 5: Solve for x
    x = 44,663,353.94/7,725.90
  6. Step 6: Final answer
    x = 5,780.99

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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.