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Finding the Fourth Proportional to 6,609, 9,112.94 and 4,215.78

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Solution

The fourth proportional to 6,609, 9,112.94 and 4,215.78 is: 5,813.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609 : 9,112.94 = 4,215.78 : x
  2. Step 2: Convert to fraction form
    6,609/9,112.94 = 4,215.78/x
  3. Step 3: Cross multiply
    6,609x = 9,112.94 × 4,215.78
  4. Step 4: Simplify right side
    6,609x = 38,418,150.19
  5. Step 5: Solve for x
    x = 38,418,150.19/6,609
  6. Step 6: Final answer
    x = 5,813.01

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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.