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Finding the Fourth Proportional to 7,812.88, 10,781.73 and 4,276.08

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Solution

The fourth proportional to 7,812.88, 10,781.73 and 4,276.08 is: 5,900.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.88 : 10,781.73 = 4,276.08 : x
  2. Step 2: Convert to fraction form
    7,812.88/10,781.73 = 4,276.08/x
  3. Step 3: Cross multiply
    7,812.88x = 10,781.73 × 4,276.08
  4. Step 4: Simplify right side
    7,812.88x = 46,103,540.02
  5. Step 5: Solve for x
    x = 46,103,540.02/7,812.88
  6. Step 6: Final answer
    x = 5,900.97

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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.