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Finding the Fourth Proportional to 6,391.83, 9,587.69 and 1,647.97

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Solution

The fourth proportional to 6,391.83, 9,587.69 and 1,647.97 is: 2,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.83 : 9,587.69 = 1,647.97 : x
  2. Step 2: Convert to fraction form
    6,391.83/9,587.69 = 1,647.97/x
  3. Step 3: Cross multiply
    6,391.83x = 9,587.69 × 1,647.97
  4. Step 4: Simplify right side
    6,391.83x = 15,800,225.49
  5. Step 5: Solve for x
    x = 15,800,225.49/6,391.83
  6. Step 6: Final answer
    x = 2,471.94

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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.