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Finding the Fourth Proportional to 8,998.72, 13,485.12 and 6,406.72

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Solution

The fourth proportional to 8,998.72, 13,485.12 and 6,406.72 is: 9,600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.72 : 13,485.12 = 6,406.72 : x
  2. Step 2: Convert to fraction form
    8,998.72/13,485.12 = 6,406.72/x
  3. Step 3: Cross multiply
    8,998.72x = 13,485.12 × 6,406.72
  4. Step 4: Simplify right side
    8,998.72x = 86,395,388.01
  5. Step 5: Solve for x
    x = 86,395,388.01/8,998.72
  6. Step 6: Final answer
    x = 9,600.85

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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.