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Finding the Fourth Proportional to 8,899.63, 12,267.35 and 7,008.21

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Solution

The fourth proportional to 8,899.63, 12,267.35 and 7,008.21 is: 9,660.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.63 : 12,267.35 = 7,008.21 : x
  2. Step 2: Convert to fraction form
    8,899.63/12,267.35 = 7,008.21/x
  3. Step 3: Cross multiply
    8,899.63x = 12,267.35 × 7,008.21
  4. Step 4: Simplify right side
    8,899.63x = 85,972,129.90
  5. Step 5: Solve for x
    x = 85,972,129.90/8,899.63
  6. Step 6: Final answer
    x = 9,660.19

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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.