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Finding the Fourth Proportional to 2,863.32, 3,946.23 and 1,813.56

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Solution

The fourth proportional to 2,863.32, 3,946.23 and 1,813.56 is: 2,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,863.32 : 3,946.23 = 1,813.56 : x
  2. Step 2: Convert to fraction form
    2,863.32/3,946.23 = 1,813.56/x
  3. Step 3: Cross multiply
    2,863.32x = 3,946.23 × 1,813.56
  4. Step 4: Simplify right side
    2,863.32x = 7,156,724.88
  5. Step 5: Solve for x
    x = 7,156,724.88/2,863.32
  6. Step 6: Final answer
    x = 2,499.45

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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.