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Finding the Fourth Proportional to 8,397.99, 12,596.58 and 2,158.20

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Solution

The fourth proportional to 8,397.99, 12,596.58 and 2,158.20 is: 3,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,397.99 : 12,596.58 = 2,158.20 : x
  2. Step 2: Convert to fraction form
    8,397.99/12,596.58 = 2,158.20/x
  3. Step 3: Cross multiply
    8,397.99x = 12,596.58 × 2,158.20
  4. Step 4: Simplify right side
    8,397.99x = 27,185,938.96
  5. Step 5: Solve for x
    x = 27,185,938.96/8,397.99
  6. Step 6: Final answer
    x = 3,237.20

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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.