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Finding the Fourth Proportional to 3,385.90, 4,672.74 and 1,893.88

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Solution

The fourth proportional to 3,385.90, 4,672.74 and 1,893.88 is: 2,613.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.90 : 4,672.74 = 1,893.88 : x
  2. Step 2: Convert to fraction form
    3,385.90/4,672.74 = 1,893.88/x
  3. Step 3: Cross multiply
    3,385.90x = 4,672.74 × 1,893.88
  4. Step 4: Simplify right side
    3,385.90x = 8,849,611.12
  5. Step 5: Solve for x
    x = 8,849,611.12/3,385.90
  6. Step 6: Final answer
    x = 2,613.66

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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.