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Finding the Fourth Proportional to 8,489.16, 11,712.06 and 4,951.62

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Solution

The fourth proportional to 8,489.16, 11,712.06 and 4,951.62 is: 6,831.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.16 : 11,712.06 = 4,951.62 : x
  2. Step 2: Convert to fraction form
    8,489.16/11,712.06 = 4,951.62/x
  3. Step 3: Cross multiply
    8,489.16x = 11,712.06 × 4,951.62
  4. Step 4: Simplify right side
    8,489.16x = 57,993,670.54
  5. Step 5: Solve for x
    x = 57,993,670.54/8,489.16
  6. Step 6: Final answer
    x = 6,831.50

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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.