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Finding the Fourth Proportional to 8,699.12, 12,006.50 and 4,922.30

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Solution

The fourth proportional to 8,699.12, 12,006.50 and 4,922.30 is: 6,793.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.12 : 12,006.50 = 4,922.30 : x
  2. Step 2: Convert to fraction form
    8,699.12/12,006.50 = 4,922.30/x
  3. Step 3: Cross multiply
    8,699.12x = 12,006.50 × 4,922.30
  4. Step 4: Simplify right side
    8,699.12x = 59,099,594.95
  5. Step 5: Solve for x
    x = 59,099,594.95/8,699.12
  6. Step 6: Final answer
    x = 6,793.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.