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Finding the Fourth Proportional to 8,706.18, 13,052.79 and 5,242.62

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Solution

The fourth proportional to 8,706.18, 13,052.79 and 5,242.62 is: 7,860.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.18 : 13,052.79 = 5,242.62 : x
  2. Step 2: Convert to fraction form
    8,706.18/13,052.79 = 5,242.62/x
  3. Step 3: Cross multiply
    8,706.18x = 13,052.79 × 5,242.62
  4. Step 4: Simplify right side
    8,706.18x = 68,430,817.91
  5. Step 5: Solve for x
    x = 68,430,817.91/8,706.18
  6. Step 6: Final answer
    x = 7,860.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.