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Finding the Fourth Proportional to 3,885.64, 5,828.38 and 963.91

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Solution

The fourth proportional to 3,885.64, 5,828.38 and 963.91 is: 1,445.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.64 : 5,828.38 = 963.91 : x
  2. Step 2: Convert to fraction form
    3,885.64/5,828.38 = 963.91/x
  3. Step 3: Cross multiply
    3,885.64x = 5,828.38 × 963.91
  4. Step 4: Simplify right side
    3,885.64x = 5,618,033.77
  5. Step 5: Solve for x
    x = 5,618,033.77/3,885.64
  6. Step 6: Final answer
    x = 1,445.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.