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Finding the Fourth Proportional to 8,999.64, 13,491.36 and 3,805.92

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Solution

The fourth proportional to 8,999.64, 13,491.36 and 3,805.92 is: 5,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,999.64 : 13,491.36 = 3,805.92 : x
  2. Step 2: Convert to fraction form
    8,999.64/13,491.36 = 3,805.92/x
  3. Step 3: Cross multiply
    8,999.64x = 13,491.36 × 3,805.92
  4. Step 4: Simplify right side
    8,999.64x = 51,347,036.85
  5. Step 5: Solve for x
    x = 51,347,036.85/8,999.64
  6. Step 6: Final answer
    x = 5,705.45

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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.