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Finding the Fourth Proportional to 9,104.70, 13,657.05 and 5,418.30

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Solution

The fourth proportional to 9,104.70, 13,657.05 and 5,418.30 is: 8,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,104.70 : 13,657.05 = 5,418.30 : x
  2. Step 2: Convert to fraction form
    9,104.70/13,657.05 = 5,418.30/x
  3. Step 3: Cross multiply
    9,104.70x = 13,657.05 × 5,418.30
  4. Step 4: Simplify right side
    9,104.70x = 73,997,994.02
  5. Step 5: Solve for x
    x = 73,997,994.02/9,104.70
  6. Step 6: Final answer
    x = 8,127.45

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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.