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Finding the Fourth Proportional to 8,586.21, 12,862.96 and 4,890.99

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Solution

The fourth proportional to 8,586.21, 12,862.96 and 4,890.99 is: 7,327.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.21 : 12,862.96 = 4,890.99 : x
  2. Step 2: Convert to fraction form
    8,586.21/12,862.96 = 4,890.99/x
  3. Step 3: Cross multiply
    8,586.21x = 12,862.96 × 4,890.99
  4. Step 4: Simplify right side
    8,586.21x = 62,912,608.73
  5. Step 5: Solve for x
    x = 62,912,608.73/8,586.21
  6. Step 6: Final answer
    x = 7,327.17

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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.