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Finding the Fourth Proportional to 9,326.88, 13,990.98 and 3,086.64

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Solution

The fourth proportional to 9,326.88, 13,990.98 and 3,086.64 is: 4,630.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,326.88 : 13,990.98 = 3,086.64 : x
  2. Step 2: Convert to fraction form
    9,326.88/13,990.98 = 3,086.64/x
  3. Step 3: Cross multiply
    9,326.88x = 13,990.98 × 3,086.64
  4. Step 4: Simplify right side
    9,326.88x = 43,185,118.51
  5. Step 5: Solve for x
    x = 43,185,118.51/9,326.88
  6. Step 6: Final answer
    x = 4,630.18

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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.