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Finding the Fourth Proportional to 8,018.70, 12,020.85 and 5,246.70

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Solution

The fourth proportional to 8,018.70, 12,020.85 and 5,246.70 is: 7,865.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,018.70 : 12,020.85 = 5,246.70 : x
  2. Step 2: Convert to fraction form
    8,018.70/12,020.85 = 5,246.70/x
  3. Step 3: Cross multiply
    8,018.70x = 12,020.85 × 5,246.70
  4. Step 4: Simplify right side
    8,018.70x = 63,069,793.70
  5. Step 5: Solve for x
    x = 63,069,793.70/8,018.70
  6. Step 6: Final answer
    x = 7,865.34

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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.