Home / 4,239.04-6,355.92-1,640.80

Finding the Fourth Proportional to 4,239.04, 6,355.92 and 1,640.80

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Solution

The fourth proportional to 4,239.04, 6,355.92 and 1,640.80 is: 2,460.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,239.04 : 6,355.92 = 1,640.80 : x
  2. Step 2: Convert to fraction form
    4,239.04/6,355.92 = 1,640.80/x
  3. Step 3: Cross multiply
    4,239.04x = 6,355.92 × 1,640.80
  4. Step 4: Simplify right side
    4,239.04x = 10,428,793.54
  5. Step 5: Solve for x
    x = 10,428,793.54/4,239.04
  6. Step 6: Final answer
    x = 2,460.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.