Home / 1,850.78-2,554.44-1,188.47

Finding the Fourth Proportional to 1,850.78, 2,554.44 and 1,188.47

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Solution

The fourth proportional to 1,850.78, 2,554.44 and 1,188.47 is: 1,640.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,850.78 : 2,554.44 = 1,188.47 : x
  2. Step 2: Convert to fraction form
    1,850.78/2,554.44 = 1,188.47/x
  3. Step 3: Cross multiply
    1,850.78x = 2,554.44 × 1,188.47
  4. Step 4: Simplify right side
    1,850.78x = 3,035,877.24
  5. Step 5: Solve for x
    x = 3,035,877.24/1,850.78
  6. Step 6: Final answer
    x = 1,640.32

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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.