Home / 5,725.20-7,900.86-3,487.18

Finding the Fourth Proportional to 5,725.20, 7,900.86 and 3,487.18

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Solution

The fourth proportional to 5,725.20, 7,900.86 and 3,487.18 is: 4,812.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,725.20 : 7,900.86 = 3,487.18 : x
  2. Step 2: Convert to fraction form
    5,725.20/7,900.86 = 3,487.18/x
  3. Step 3: Cross multiply
    5,725.20x = 7,900.86 × 3,487.18
  4. Step 4: Simplify right side
    5,725.20x = 27,551,720.97
  5. Step 5: Solve for x
    x = 27,551,720.97/5,725.20
  6. Step 6: Final answer
    x = 4,812.36

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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.