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Finding the Fourth Proportional to 1,801.75, 2,486.41 and 1,015.79

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Solution

The fourth proportional to 1,801.75, 2,486.41 and 1,015.79 is: 1,401.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.75 : 2,486.41 = 1,015.79 : x
  2. Step 2: Convert to fraction form
    1,801.75/2,486.41 = 1,015.79/x
  3. Step 3: Cross multiply
    1,801.75x = 2,486.41 × 1,015.79
  4. Step 4: Simplify right side
    1,801.75x = 2,525,664.77
  5. Step 5: Solve for x
    x = 2,525,664.77/1,801.75
  6. Step 6: Final answer
    x = 1,401.79

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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.