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Finding the Fourth Proportional to 8,908.63, 13,297.14 and 7,858.04

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Solution

The fourth proportional to 8,908.63, 13,297.14 and 7,858.04 is: 11,729.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.63 : 13,297.14 = 7,858.04 : x
  2. Step 2: Convert to fraction form
    8,908.63/13,297.14 = 7,858.04/x
  3. Step 3: Cross multiply
    8,908.63x = 13,297.14 × 7,858.04
  4. Step 4: Simplify right side
    8,908.63x = 104,489,391.52
  5. Step 5: Solve for x
    x = 104,489,391.52/8,908.63
  6. Step 6: Final answer
    x = 11,729.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.