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Finding the Fourth Proportional to 8,997.89, 12,421.15 and 6,603.64

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Solution

The fourth proportional to 8,997.89, 12,421.15 and 6,603.64 is: 9,116.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.89 : 12,421.15 = 6,603.64 : x
  2. Step 2: Convert to fraction form
    8,997.89/12,421.15 = 6,603.64/x
  3. Step 3: Cross multiply
    8,997.89x = 12,421.15 × 6,603.64
  4. Step 4: Simplify right side
    8,997.89x = 82,024,755.42
  5. Step 5: Solve for x
    x = 82,024,755.42/8,997.89
  6. Step 6: Final answer
    x = 9,116.00

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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.