Home / 3,355.93-4,631.58-1,939.78

Finding the Fourth Proportional to 3,355.93, 4,631.58 and 1,939.78

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Solution

The fourth proportional to 3,355.93, 4,631.58 and 1,939.78 is: 2,677.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.93 : 4,631.58 = 1,939.78 : x
  2. Step 2: Convert to fraction form
    3,355.93/4,631.58 = 1,939.78/x
  3. Step 3: Cross multiply
    3,355.93x = 4,631.58 × 1,939.78
  4. Step 4: Simplify right side
    3,355.93x = 8,984,246.25
  5. Step 5: Solve for x
    x = 8,984,246.25/3,355.93
  6. Step 6: Final answer
    x = 2,677.13

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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.