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Finding the Fourth Proportional to 8,621.87, 11,896.07 and 5,263.46

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Solution

The fourth proportional to 8,621.87, 11,896.07 and 5,263.46 is: 7,262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.87 : 11,896.07 = 5,263.46 : x
  2. Step 2: Convert to fraction form
    8,621.87/11,896.07 = 5,263.46/x
  3. Step 3: Cross multiply
    8,621.87x = 11,896.07 × 5,263.46
  4. Step 4: Simplify right side
    8,621.87x = 62,614,402.80
  5. Step 5: Solve for x
    x = 62,614,402.80/8,621.87
  6. Step 6: Final answer
    x = 7,262.28

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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.