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Finding the Fourth Proportional to 8,943.30, 12,336.30 and 5,755.50

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Solution

The fourth proportional to 8,943.30, 12,336.30 and 5,755.50 is: 7,939.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.30 : 12,336.30 = 5,755.50 : x
  2. Step 2: Convert to fraction form
    8,943.30/12,336.30 = 5,755.50/x
  3. Step 3: Cross multiply
    8,943.30x = 12,336.30 × 5,755.50
  4. Step 4: Simplify right side
    8,943.30x = 71,001,574.65
  5. Step 5: Solve for x
    x = 71,001,574.65/8,943.30
  6. Step 6: Final answer
    x = 7,939.08

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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.