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Finding the Fourth Proportional to 4,203.90, 6,336.95 and 3,915.90

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Solution

The fourth proportional to 4,203.90, 6,336.95 and 3,915.90 is: 5,902.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,203.90 : 6,336.95 = 3,915.90 : x
  2. Step 2: Convert to fraction form
    4,203.90/6,336.95 = 3,915.90/x
  3. Step 3: Cross multiply
    4,203.90x = 6,336.95 × 3,915.90
  4. Step 4: Simplify right side
    4,203.90x = 24,814,842.93
  5. Step 5: Solve for x
    x = 24,814,842.93/4,203.90
  6. Step 6: Final answer
    x = 5,902.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.