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Finding the Fourth Proportional to 8,445.63, 12,672.20 and 2,902.95

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Solution

The fourth proportional to 8,445.63, 12,672.20 and 2,902.95 is: 4,355.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.63 : 12,672.20 = 2,902.95 : x
  2. Step 2: Convert to fraction form
    8,445.63/12,672.20 = 2,902.95/x
  3. Step 3: Cross multiply
    8,445.63x = 12,672.20 × 2,902.95
  4. Step 4: Simplify right side
    8,445.63x = 36,786,762.99
  5. Step 5: Solve for x
    x = 36,786,762.99/8,445.63
  6. Step 6: Final answer
    x = 4,355.72

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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.