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Finding the Fourth Proportional to 8,141.70, 12,228.93 and 4,861.20

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Solution

The fourth proportional to 8,141.70, 12,228.93 and 4,861.20 is: 7,301.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,141.70 : 12,228.93 = 4,861.20 : x
  2. Step 2: Convert to fraction form
    8,141.70/12,228.93 = 4,861.20/x
  3. Step 3: Cross multiply
    8,141.70x = 12,228.93 × 4,861.20
  4. Step 4: Simplify right side
    8,141.70x = 59,447,274.52
  5. Step 5: Solve for x
    x = 59,447,274.52/8,141.70
  6. Step 6: Final answer
    x = 7,301.58

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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.