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Finding the Fourth Proportional to 8,018.40, 11,995.20 and 6,934.80

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Solution

The fourth proportional to 8,018.40, 11,995.20 and 6,934.80 is: 10,374.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,018.40 : 11,995.20 = 6,934.80 : x
  2. Step 2: Convert to fraction form
    8,018.40/11,995.20 = 6,934.80/x
  3. Step 3: Cross multiply
    8,018.40x = 11,995.20 × 6,934.80
  4. Step 4: Simplify right side
    8,018.40x = 83,184,312.96
  5. Step 5: Solve for x
    x = 83,184,312.96/8,018.40
  6. Step 6: Final answer
    x = 10,374.18

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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.