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Finding the Fourth Proportional to 8,705.91, 12,014.20 and 4,727.02

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Solution

The fourth proportional to 8,705.91, 12,014.20 and 4,727.02 is: 6,523.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.91 : 12,014.20 = 4,727.02 : x
  2. Step 2: Convert to fraction form
    8,705.91/12,014.20 = 4,727.02/x
  3. Step 3: Cross multiply
    8,705.91x = 12,014.20 × 4,727.02
  4. Step 4: Simplify right side
    8,705.91x = 56,791,348.55
  5. Step 5: Solve for x
    x = 56,791,348.55/8,705.91
  6. Step 6: Final answer
    x = 6,523.31

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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.