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Finding the Fourth Proportional to 1,801.78, 2,486.50 and 1,015.88

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Solution

The fourth proportional to 1,801.78, 2,486.50 and 1,015.88 is: 1,401.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.78 : 2,486.50 = 1,015.88 : x
  2. Step 2: Convert to fraction form
    1,801.78/2,486.50 = 1,015.88/x
  3. Step 3: Cross multiply
    1,801.78x = 2,486.50 × 1,015.88
  4. Step 4: Simplify right side
    1,801.78x = 2,525,970.65
  5. Step 5: Solve for x
    x = 2,525,970.65/1,801.78
  6. Step 6: Final answer
    x = 1,401.93

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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.