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Finding the Fourth Proportional to 6,603.40, 9,112.68 and 3,619.42

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Solution

The fourth proportional to 6,603.40, 9,112.68 and 3,619.42 is: 4,994.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.40 : 9,112.68 = 3,619.42 : x
  2. Step 2: Convert to fraction form
    6,603.40/9,112.68 = 3,619.42/x
  3. Step 3: Cross multiply
    6,603.40x = 9,112.68 × 3,619.42
  4. Step 4: Simplify right side
    6,603.40x = 32,982,616.25
  5. Step 5: Solve for x
    x = 32,982,616.25/6,603.40
  6. Step 6: Final answer
    x = 4,994.79

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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.