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Finding the Fourth Proportional to 8,602.19, 12,903.28 and 5,679.81

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Solution

The fourth proportional to 8,602.19, 12,903.28 and 5,679.81 is: 8,519.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.19 : 12,903.28 = 5,679.81 : x
  2. Step 2: Convert to fraction form
    8,602.19/12,903.28 = 5,679.81/x
  3. Step 3: Cross multiply
    8,602.19x = 12,903.28 × 5,679.81
  4. Step 4: Simplify right side
    8,602.19x = 73,288,178.78
  5. Step 5: Solve for x
    x = 73,288,178.78/8,602.19
  6. Step 6: Final answer
    x = 8,519.71

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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.