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Finding the Fourth Proportional to 8,998.36, 12,411.30 and 7,801.21

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Solution

The fourth proportional to 8,998.36, 12,411.30 and 7,801.21 is: 10,760.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.36 : 12,411.30 = 7,801.21 : x
  2. Step 2: Convert to fraction form
    8,998.36/12,411.30 = 7,801.21/x
  3. Step 3: Cross multiply
    8,998.36x = 12,411.30 × 7,801.21
  4. Step 4: Simplify right side
    8,998.36x = 96,823,157.67
  5. Step 5: Solve for x
    x = 96,823,157.67/8,998.36
  6. Step 6: Final answer
    x = 10,760.09

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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.