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Finding the Fourth Proportional to 8,692.29, 11,997 and 5,157.45

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Solution

The fourth proportional to 8,692.29, 11,997 and 5,157.45 is: 7,118.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.29 : 11,997 = 5,157.45 : x
  2. Step 2: Convert to fraction form
    8,692.29/11,997 = 5,157.45/x
  3. Step 3: Cross multiply
    8,692.29x = 11,997 × 5,157.45
  4. Step 4: Simplify right side
    8,692.29x = 61,873,927.65
  5. Step 5: Solve for x
    x = 61,873,927.65/8,692.29
  6. Step 6: Final answer
    x = 7,118.25

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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.