Home / 3,421.92-4,724.88-2,835.84

Finding the Fourth Proportional to 3,421.92, 4,724.88 and 2,835.84

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Solution

The fourth proportional to 3,421.92, 4,724.88 and 2,835.84 is: 3,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.92 : 4,724.88 = 2,835.84 : x
  2. Step 2: Convert to fraction form
    3,421.92/4,724.88 = 2,835.84/x
  3. Step 3: Cross multiply
    3,421.92x = 4,724.88 × 2,835.84
  4. Step 4: Simplify right side
    3,421.92x = 13,399,003.70
  5. Step 5: Solve for x
    x = 13,399,003.70/3,421.92
  6. Step 6: Final answer
    x = 3,915.64

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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.