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Finding the Fourth Proportional to 9,203.10, 13,789.80 and 8,328.30

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Solution

The fourth proportional to 9,203.10, 13,789.80 and 8,328.30 is: 12,479.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,203.10 : 13,789.80 = 8,328.30 : x
  2. Step 2: Convert to fraction form
    9,203.10/13,789.80 = 8,328.30/x
  3. Step 3: Cross multiply
    9,203.10x = 13,789.80 × 8,328.30
  4. Step 4: Simplify right side
    9,203.10x = 114,845,591.34
  5. Step 5: Solve for x
    x = 114,845,591.34/9,203.10
  6. Step 6: Final answer
    x = 12,479.01

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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.