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Finding the Fourth Proportional to 2,884.94, 3,980.79 and 1,625.76

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Solution

The fourth proportional to 2,884.94, 3,980.79 and 1,625.76 is: 2,243.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,884.94 : 3,980.79 = 1,625.76 : x
  2. Step 2: Convert to fraction form
    2,884.94/3,980.79 = 1,625.76/x
  3. Step 3: Cross multiply
    2,884.94x = 3,980.79 × 1,625.76
  4. Step 4: Simplify right side
    2,884.94x = 6,471,809.15
  5. Step 5: Solve for x
    x = 6,471,809.15/2,884.94
  6. Step 6: Final answer
    x = 2,243.31

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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.