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Finding the Fourth Proportional to 3,355.96, 4,630.98 and 1,939.16

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Solution

The fourth proportional to 3,355.96, 4,630.98 and 1,939.16 is: 2,675.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.96 : 4,630.98 = 1,939.16 : x
  2. Step 2: Convert to fraction form
    3,355.96/4,630.98 = 1,939.16/x
  3. Step 3: Cross multiply
    3,355.96x = 4,630.98 × 1,939.16
  4. Step 4: Simplify right side
    3,355.96x = 8,980,211.18
  5. Step 5: Solve for x
    x = 8,980,211.18/3,355.96
  6. Step 6: Final answer
    x = 2,675.90

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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.