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Finding the Fourth Proportional to 8,603.84, 11,875.82 and 5,620.14

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Solution

The fourth proportional to 8,603.84, 11,875.82 and 5,620.14 is: 7,757.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.84 : 11,875.82 = 5,620.14 : x
  2. Step 2: Convert to fraction form
    8,603.84/11,875.82 = 5,620.14/x
  3. Step 3: Cross multiply
    8,603.84x = 11,875.82 × 5,620.14
  4. Step 4: Simplify right side
    8,603.84x = 66,743,771.01
  5. Step 5: Solve for x
    x = 66,743,771.01/8,603.84
  6. Step 6: Final answer
    x = 7,757.44

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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.