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Finding the Fourth Proportional to 8,909.01, 13,297.71 and 7,858.41

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Solution

The fourth proportional to 8,909.01, 13,297.71 and 7,858.41 is: 11,729.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.01 : 13,297.71 = 7,858.41 : x
  2. Step 2: Convert to fraction form
    8,909.01/13,297.71 = 7,858.41/x
  3. Step 3: Cross multiply
    8,909.01x = 13,297.71 × 7,858.41
  4. Step 4: Simplify right side
    8,909.01x = 104,498,857.24
  5. Step 5: Solve for x
    x = 104,498,857.24/8,909.01
  6. Step 6: Final answer
    x = 11,729.57

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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.