Home / 3,397.50-4,688.42-1,905.38

Finding the Fourth Proportional to 3,397.50, 4,688.42 and 1,905.38

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Solution

The fourth proportional to 3,397.50, 4,688.42 and 1,905.38 is: 2,629.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.50 : 4,688.42 = 1,905.38 : x
  2. Step 2: Convert to fraction form
    3,397.50/4,688.42 = 1,905.38/x
  3. Step 3: Cross multiply
    3,397.50x = 4,688.42 × 1,905.38
  4. Step 4: Simplify right side
    3,397.50x = 8,933,234.11
  5. Step 5: Solve for x
    x = 8,933,234.11/3,397.50
  6. Step 6: Final answer
    x = 2,629.36

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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.