Home / 4,806.20-6,640.80-3,820.16

Finding the Fourth Proportional to 4,806.20, 6,640.80 and 3,820.16

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Solution

The fourth proportional to 4,806.20, 6,640.80 and 3,820.16 is: 5,278.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,806.20 : 6,640.80 = 3,820.16 : x
  2. Step 2: Convert to fraction form
    4,806.20/6,640.80 = 3,820.16/x
  3. Step 3: Cross multiply
    4,806.20x = 6,640.80 × 3,820.16
  4. Step 4: Simplify right side
    4,806.20x = 25,368,918.53
  5. Step 5: Solve for x
    x = 25,368,918.53/4,806.20
  6. Step 6: Final answer
    x = 5,278.37

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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.