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Finding the Fourth Proportional to 8,390.94, 12,586.40 and 2,234.94

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Solution

The fourth proportional to 8,390.94, 12,586.40 and 2,234.94 is: 3,352.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.94 : 12,586.40 = 2,234.94 : x
  2. Step 2: Convert to fraction form
    8,390.94/12,586.40 = 2,234.94/x
  3. Step 3: Cross multiply
    8,390.94x = 12,586.40 × 2,234.94
  4. Step 4: Simplify right side
    8,390.94x = 28,129,848.82
  5. Step 5: Solve for x
    x = 28,129,848.82/8,390.94
  6. Step 6: Final answer
    x = 3,352.41

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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.