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Finding the Fourth Proportional to 9,321.04, 12,852.92 and 6,330.92

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Solution

The fourth proportional to 9,321.04, 12,852.92 and 6,330.92 is: 8,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.04 : 12,852.92 = 6,330.92 : x
  2. Step 2: Convert to fraction form
    9,321.04/12,852.92 = 6,330.92/x
  3. Step 3: Cross multiply
    9,321.04x = 12,852.92 × 6,330.92
  4. Step 4: Simplify right side
    9,321.04x = 81,370,808.29
  5. Step 5: Solve for x
    x = 81,370,808.29/9,321.04
  6. Step 6: Final answer
    x = 8,729.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.