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Finding the Fourth Proportional to 7,943.59, 10,959.92 and 6,259.77

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Solution

The fourth proportional to 7,943.59, 10,959.92 and 6,259.77 is: 8,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.59 : 10,959.92 = 6,259.77 : x
  2. Step 2: Convert to fraction form
    7,943.59/10,959.92 = 6,259.77/x
  3. Step 3: Cross multiply
    7,943.59x = 10,959.92 × 6,259.77
  4. Step 4: Simplify right side
    7,943.59x = 68,606,523.62
  5. Step 5: Solve for x
    x = 68,606,523.62/7,943.59
  6. Step 6: Final answer
    x = 8,636.72

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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.