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Finding the Fourth Proportional to 8,705.61, 12,004.92 and 7,450.83

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Solution

The fourth proportional to 8,705.61, 12,004.92 and 7,450.83 is: 10,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.61 : 12,004.92 = 7,450.83 : x
  2. Step 2: Convert to fraction form
    8,705.61/12,004.92 = 7,450.83/x
  3. Step 3: Cross multiply
    8,705.61x = 12,004.92 × 7,450.83
  4. Step 4: Simplify right side
    8,705.61x = 89,446,618.08
  5. Step 5: Solve for x
    x = 89,446,618.08/8,705.61
  6. Step 6: Final answer
    x = 10,274.60

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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.