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Finding the Fourth Proportional to 8,809.20, 13,246.20 and 7,383.60

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Solution

The fourth proportional to 8,809.20, 13,246.20 and 7,383.60 is: 11,102.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.20 : 13,246.20 = 7,383.60 : x
  2. Step 2: Convert to fraction form
    8,809.20/13,246.20 = 7,383.60/x
  3. Step 3: Cross multiply
    8,809.20x = 13,246.20 × 7,383.60
  4. Step 4: Simplify right side
    8,809.20x = 97,804,642.32
  5. Step 5: Solve for x
    x = 97,804,642.32/8,809.20
  6. Step 6: Final answer
    x = 11,102.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.