Home / 1,856.78-2,556.51-1,413.26

Finding the Fourth Proportional to 1,856.78, 2,556.51 and 1,413.26

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Solution

The fourth proportional to 1,856.78, 2,556.51 and 1,413.26 is: 1,945.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.78 : 2,556.51 = 1,413.26 : x
  2. Step 2: Convert to fraction form
    1,856.78/2,556.51 = 1,413.26/x
  3. Step 3: Cross multiply
    1,856.78x = 2,556.51 × 1,413.26
  4. Step 4: Simplify right side
    1,856.78x = 3,613,013.32
  5. Step 5: Solve for x
    x = 3,613,013.32/1,856.78
  6. Step 6: Final answer
    x = 1,945.85

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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.