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Finding the Fourth Proportional to 9,258.87, 12,783.20 and 8,262.43

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Solution

The fourth proportional to 9,258.87, 12,783.20 and 8,262.43 is: 11,407.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,258.87 : 12,783.20 = 8,262.43 : x
  2. Step 2: Convert to fraction form
    9,258.87/12,783.20 = 8,262.43/x
  3. Step 3: Cross multiply
    9,258.87x = 12,783.20 × 8,262.43
  4. Step 4: Simplify right side
    9,258.87x = 105,620,295.18
  5. Step 5: Solve for x
    x = 105,620,295.18/9,258.87
  6. Step 6: Final answer
    x = 11,407.47

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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.