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Finding the Fourth Proportional to 8,903.89, 13,355.89 and 6,122.18

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Solution

The fourth proportional to 8,903.89, 13,355.89 and 6,122.18 is: 9,183.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.89 : 13,355.89 = 6,122.18 : x
  2. Step 2: Convert to fraction form
    8,903.89/13,355.89 = 6,122.18/x
  3. Step 3: Cross multiply
    8,903.89x = 13,355.89 × 6,122.18
  4. Step 4: Simplify right side
    8,903.89x = 81,767,162.64
  5. Step 5: Solve for x
    x = 81,767,162.64/8,903.89
  6. Step 6: Final answer
    x = 9,183.31

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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.