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Finding the Fourth Proportional to 9,101.91, 13,646.84 and 3,555.78

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Solution

The fourth proportional to 9,101.91, 13,646.84 and 3,555.78 is: 5,331.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,101.91 : 13,646.84 = 3,555.78 : x
  2. Step 2: Convert to fraction form
    9,101.91/13,646.84 = 3,555.78/x
  3. Step 3: Cross multiply
    9,101.91x = 13,646.84 × 3,555.78
  4. Step 4: Simplify right side
    9,101.91x = 48,525,142.96
  5. Step 5: Solve for x
    x = 48,525,142.96/9,101.91
  6. Step 6: Final answer
    x = 5,331.31

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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.