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Finding the Fourth Proportional to 8,762.42, 13,143.63 and 2,188.60

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Solution

The fourth proportional to 8,762.42, 13,143.63 and 2,188.60 is: 3,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.42 : 13,143.63 = 2,188.60 : x
  2. Step 2: Convert to fraction form
    8,762.42/13,143.63 = 2,188.60/x
  3. Step 3: Cross multiply
    8,762.42x = 13,143.63 × 2,188.60
  4. Step 4: Simplify right side
    8,762.42x = 28,766,148.62
  5. Step 5: Solve for x
    x = 28,766,148.62/8,762.42
  6. Step 6: Final answer
    x = 3,282.90

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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.