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Finding the Fourth Proportional to 8,777.34, 13,161.12 and 2,930.76

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Solution

The fourth proportional to 8,777.34, 13,161.12 and 2,930.76 is: 4,394.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.34 : 13,161.12 = 2,930.76 : x
  2. Step 2: Convert to fraction form
    8,777.34/13,161.12 = 2,930.76/x
  3. Step 3: Cross multiply
    8,777.34x = 13,161.12 × 2,930.76
  4. Step 4: Simplify right side
    8,777.34x = 38,572,084.05
  5. Step 5: Solve for x
    x = 38,572,084.05/8,777.34
  6. Step 6: Final answer
    x = 4,394.51

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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.