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Finding the Fourth Proportional to 2,811.06, 4,216.56 and 962.19

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Solution

The fourth proportional to 2,811.06, 4,216.56 and 962.19 is: 1,443.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.06 : 4,216.56 = 962.19 : x
  2. Step 2: Convert to fraction form
    2,811.06/4,216.56 = 962.19/x
  3. Step 3: Cross multiply
    2,811.06x = 4,216.56 × 962.19
  4. Step 4: Simplify right side
    2,811.06x = 4,057,131.87
  5. Step 5: Solve for x
    x = 4,057,131.87/2,811.06
  6. Step 6: Final answer
    x = 1,443.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.