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Finding the Fourth Proportional to 3,355.75, 4,631.00 and 1,863.81

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Solution

The fourth proportional to 3,355.75, 4,631.00 and 1,863.81 is: 2,572.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.75 : 4,631.00 = 1,863.81 : x
  2. Step 2: Convert to fraction form
    3,355.75/4,631.00 = 1,863.81/x
  3. Step 3: Cross multiply
    3,355.75x = 4,631.00 × 1,863.81
  4. Step 4: Simplify right side
    3,355.75x = 8,631,277.42
  5. Step 5: Solve for x
    x = 8,631,277.42/3,355.75
  6. Step 6: Final answer
    x = 2,572.08

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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.