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Finding the Fourth Proportional to 8,994.70, 12,412.80 and 5,218.02

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Solution

The fourth proportional to 8,994.70, 12,412.80 and 5,218.02 is: 7,200.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,994.70 : 12,412.80 = 5,218.02 : x
  2. Step 2: Convert to fraction form
    8,994.70/12,412.80 = 5,218.02/x
  3. Step 3: Cross multiply
    8,994.70x = 12,412.80 × 5,218.02
  4. Step 4: Simplify right side
    8,994.70x = 64,770,238.66
  5. Step 5: Solve for x
    x = 64,770,238.66/8,994.70
  6. Step 6: Final answer
    x = 7,200.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.