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Finding the Fourth Proportional to 8,969.19, 12,375.01 and 5,383.20

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Solution

The fourth proportional to 8,969.19, 12,375.01 and 5,383.20 is: 7,427.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.19 : 12,375.01 = 5,383.20 : x
  2. Step 2: Convert to fraction form
    8,969.19/12,375.01 = 5,383.20/x
  3. Step 3: Cross multiply
    8,969.19x = 12,375.01 × 5,383.20
  4. Step 4: Simplify right side
    8,969.19x = 66,617,153.83
  5. Step 5: Solve for x
    x = 66,617,153.83/8,969.19
  6. Step 6: Final answer
    x = 7,427.33

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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.