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Finding the Fourth Proportional to 7,328.64, 10,992.88 and 1,781.99

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Solution

The fourth proportional to 7,328.64, 10,992.88 and 1,781.99 is: 2,672.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,328.64 : 10,992.88 = 1,781.99 : x
  2. Step 2: Convert to fraction form
    7,328.64/10,992.88 = 1,781.99/x
  3. Step 3: Cross multiply
    7,328.64x = 10,992.88 × 1,781.99
  4. Step 4: Simplify right side
    7,328.64x = 19,589,190.72
  5. Step 5: Solve for x
    x = 19,589,190.72/7,328.64
  6. Step 6: Final answer
    x = 2,672.96

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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.