Home / 4,812.40-6,640.44-2,687.84

Finding the Fourth Proportional to 4,812.40, 6,640.44 and 2,687.84

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Solution

The fourth proportional to 4,812.40, 6,640.44 and 2,687.84 is: 3,708.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.40 : 6,640.44 = 2,687.84 : x
  2. Step 2: Convert to fraction form
    4,812.40/6,640.44 = 2,687.84/x
  3. Step 3: Cross multiply
    4,812.40x = 6,640.44 × 2,687.84
  4. Step 4: Simplify right side
    4,812.40x = 17,848,440.25
  5. Step 5: Solve for x
    x = 17,848,440.25/4,812.40
  6. Step 6: Final answer
    x = 3,708.84

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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.