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Finding the Fourth Proportional to 5,768.72, 8,651.26 and 1,872.32

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Solution

The fourth proportional to 5,768.72, 8,651.26 and 1,872.32 is: 2,807.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,768.72 : 8,651.26 = 1,872.32 : x
  2. Step 2: Convert to fraction form
    5,768.72/8,651.26 = 1,872.32/x
  3. Step 3: Cross multiply
    5,768.72x = 8,651.26 × 1,872.32
  4. Step 4: Simplify right side
    5,768.72x = 16,197,927.12
  5. Step 5: Solve for x
    x = 16,197,927.12/5,768.72
  6. Step 6: Final answer
    x = 2,807.89

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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.