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Finding the Fourth Proportional to 8,673.72, 13,014.18 and 4,777.80

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Solution

The fourth proportional to 8,673.72, 13,014.18 and 4,777.80 is: 7,168.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.72 : 13,014.18 = 4,777.80 : x
  2. Step 2: Convert to fraction form
    8,673.72/13,014.18 = 4,777.80/x
  3. Step 3: Cross multiply
    8,673.72x = 13,014.18 × 4,777.80
  4. Step 4: Simplify right side
    8,673.72x = 62,179,149.20
  5. Step 5: Solve for x
    x = 62,179,149.20/8,673.72
  6. Step 6: Final answer
    x = 7,168.68

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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.