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Finding the Fourth Proportional to 1,801.40, 2,485.62 and 1,015.48

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Solution

The fourth proportional to 1,801.40, 2,485.62 and 1,015.48 is: 1,401.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.40 : 2,485.62 = 1,015.48 : x
  2. Step 2: Convert to fraction form
    1,801.40/2,485.62 = 1,015.48/x
  3. Step 3: Cross multiply
    1,801.40x = 2,485.62 × 1,015.48
  4. Step 4: Simplify right side
    1,801.40x = 2,524,097.40
  5. Step 5: Solve for x
    x = 2,524,097.40/1,801.40
  6. Step 6: Final answer
    x = 1,401.19

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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.