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Finding the Fourth Proportional to 8,943.35, 12,345.14 and 7,679.33

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Solution

The fourth proportional to 8,943.35, 12,345.14 and 7,679.33 is: 10,600.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.35 : 12,345.14 = 7,679.33 : x
  2. Step 2: Convert to fraction form
    8,943.35/12,345.14 = 7,679.33/x
  3. Step 3: Cross multiply
    8,943.35x = 12,345.14 × 7,679.33
  4. Step 4: Simplify right side
    8,943.35x = 94,802,378.93
  5. Step 5: Solve for x
    x = 94,802,378.93/8,943.35
  6. Step 6: Final answer
    x = 10,600.32

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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.