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Finding the Fourth Proportional to 8,777.80, 13,167.06 and 2,938.60

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Solution

The fourth proportional to 8,777.80, 13,167.06 and 2,938.60 is: 4,408.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.80 : 13,167.06 = 2,938.60 : x
  2. Step 2: Convert to fraction form
    8,777.80/13,167.06 = 2,938.60/x
  3. Step 3: Cross multiply
    8,777.80x = 13,167.06 × 2,938.60
  4. Step 4: Simplify right side
    8,777.80x = 38,692,722.52
  5. Step 5: Solve for x
    x = 38,692,722.52/8,777.80
  6. Step 6: Final answer
    x = 4,408.02

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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.