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Finding the Fourth Proportional to 3,863.54, 5,368.66 and 3,823.40

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Solution

The fourth proportional to 3,863.54, 5,368.66 and 3,823.40 is: 5,312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.54 : 5,368.66 = 3,823.40 : x
  2. Step 2: Convert to fraction form
    3,863.54/5,368.66 = 3,823.40/x
  3. Step 3: Cross multiply
    3,863.54x = 5,368.66 × 3,823.40
  4. Step 4: Simplify right side
    3,863.54x = 20,526,534.64
  5. Step 5: Solve for x
    x = 20,526,534.64/3,863.54
  6. Step 6: Final answer
    x = 5,312.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.