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Finding the Fourth Proportional to 1,850.78, 2,554 and 1,011.48

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Solution

The fourth proportional to 1,850.78, 2,554 and 1,011.48 is: 1,395.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,850.78 : 2,554 = 1,011.48 : x
  2. Step 2: Convert to fraction form
    1,850.78/2,554 = 1,011.48/x
  3. Step 3: Cross multiply
    1,850.78x = 2,554 × 1,011.48
  4. Step 4: Simplify right side
    1,850.78x = 2,583,319.92
  5. Step 5: Solve for x
    x = 2,583,319.92/1,850.78
  6. Step 6: Final answer
    x = 1,395.80

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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.