Home / 2,643.23-3,640.29-2,043.51

Finding the Fourth Proportional to 2,643.23, 3,640.29 and 2,043.51

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Solution

The fourth proportional to 2,643.23, 3,640.29 and 2,043.51 is: 2,814.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.23 : 3,640.29 = 2,043.51 : x
  2. Step 2: Convert to fraction form
    2,643.23/3,640.29 = 2,043.51/x
  3. Step 3: Cross multiply
    2,643.23x = 3,640.29 × 2,043.51
  4. Step 4: Simplify right side
    2,643.23x = 7,438,969.02
  5. Step 5: Solve for x
    x = 7,438,969.02/2,643.23
  6. Step 6: Final answer
    x = 2,814.35

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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.