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Finding the Fourth Proportional to 8,896.63, 12,279.93 and 5,122.46

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Solution

The fourth proportional to 8,896.63, 12,279.93 and 5,122.46 is: 7,070.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,896.63 : 12,279.93 = 5,122.46 : x
  2. Step 2: Convert to fraction form
    8,896.63/12,279.93 = 5,122.46/x
  3. Step 3: Cross multiply
    8,896.63x = 12,279.93 × 5,122.46
  4. Step 4: Simplify right side
    8,896.63x = 62,903,450.23
  5. Step 5: Solve for x
    x = 62,903,450.23/8,896.63
  6. Step 6: Final answer
    x = 7,070.48

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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.