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Finding the Fourth Proportional to 8,607.99, 11,874.51 and 7,107.15

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Solution

The fourth proportional to 8,607.99, 11,874.51 and 7,107.15 is: 9,804.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.99 : 11,874.51 = 7,107.15 : x
  2. Step 2: Convert to fraction form
    8,607.99/11,874.51 = 7,107.15/x
  3. Step 3: Cross multiply
    8,607.99x = 11,874.51 × 7,107.15
  4. Step 4: Simplify right side
    8,607.99x = 84,393,923.75
  5. Step 5: Solve for x
    x = 84,393,923.75/8,607.99
  6. Step 6: Final answer
    x = 9,804.14

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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.