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Finding the Fourth Proportional to 8,705.73, 12,014.87 and 5,169.16

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Solution

The fourth proportional to 8,705.73, 12,014.87 and 5,169.16 is: 7,134.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.73 : 12,014.87 = 5,169.16 : x
  2. Step 2: Convert to fraction form
    8,705.73/12,014.87 = 5,169.16/x
  3. Step 3: Cross multiply
    8,705.73x = 12,014.87 × 5,169.16
  4. Step 4: Simplify right side
    8,705.73x = 62,106,785.41
  5. Step 5: Solve for x
    x = 62,106,785.41/8,705.73
  6. Step 6: Final answer
    x = 7,134.01

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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.