Home / 4,188.75-5,778.79-2,420.02

Finding the Fourth Proportional to 4,188.75, 5,778.79 and 2,420.02

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Solution

The fourth proportional to 4,188.75, 5,778.79 and 2,420.02 is: 3,338.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.75 : 5,778.79 = 2,420.02 : x
  2. Step 2: Convert to fraction form
    4,188.75/5,778.79 = 2,420.02/x
  3. Step 3: Cross multiply
    4,188.75x = 5,778.79 × 2,420.02
  4. Step 4: Simplify right side
    4,188.75x = 13,984,787.38
  5. Step 5: Solve for x
    x = 13,984,787.38/4,188.75
  6. Step 6: Final answer
    x = 3,338.65

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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.