Home / 4,812.13-6,640.63-2,687.60

Finding the Fourth Proportional to 4,812.13, 6,640.63 and 2,687.60

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Solution

The fourth proportional to 4,812.13, 6,640.63 and 2,687.60 is: 3,708.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.13 : 6,640.63 = 2,687.60 : x
  2. Step 2: Convert to fraction form
    4,812.13/6,640.63 = 2,687.60/x
  3. Step 3: Cross multiply
    4,812.13x = 6,640.63 × 2,687.60
  4. Step 4: Simplify right side
    4,812.13x = 17,847,344.83
  5. Step 5: Solve for x
    x = 17,847,344.83/4,812.13
  6. Step 6: Final answer
    x = 3,708.83

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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.