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Finding the Fourth Proportional to 3,355.71, 4,631.02 and 1,863.63

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Solution

The fourth proportional to 3,355.71, 4,631.02 and 1,863.63 is: 2,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.71 : 4,631.02 = 1,863.63 : x
  2. Step 2: Convert to fraction form
    3,355.71/4,631.02 = 1,863.63/x
  3. Step 3: Cross multiply
    3,355.71x = 4,631.02 × 1,863.63
  4. Step 4: Simplify right side
    3,355.71x = 8,630,484.65
  5. Step 5: Solve for x
    x = 8,630,484.65/3,355.71
  6. Step 6: Final answer
    x = 2,571.88

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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.