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Finding the Fourth Proportional to 2,800.51, 3,863.37 and 1,805.29

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Solution

The fourth proportional to 2,800.51, 3,863.37 and 1,805.29 is: 2,490.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.51 : 3,863.37 = 1,805.29 : x
  2. Step 2: Convert to fraction form
    2,800.51/3,863.37 = 1,805.29/x
  3. Step 3: Cross multiply
    2,800.51x = 3,863.37 × 1,805.29
  4. Step 4: Simplify right side
    2,800.51x = 6,974,503.23
  5. Step 5: Solve for x
    x = 6,974,503.23/2,800.51
  6. Step 6: Final answer
    x = 2,490.44

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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.