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Finding the Fourth Proportional to 8,969.36, 13,458.36 and 3,774.56

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Solution

The fourth proportional to 8,969.36, 13,458.36 and 3,774.56 is: 5,663.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.36 : 13,458.36 = 3,774.56 : x
  2. Step 2: Convert to fraction form
    8,969.36/13,458.36 = 3,774.56/x
  3. Step 3: Cross multiply
    8,969.36x = 13,458.36 × 3,774.56
  4. Step 4: Simplify right side
    8,969.36x = 50,799,387.32
  5. Step 5: Solve for x
    x = 50,799,387.32/8,969.36
  6. Step 6: Final answer
    x = 5,663.66

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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.