Home / 1,413.16-2,126.64-1,278.88

Finding the Fourth Proportional to 1,413.16, 2,126.64 and 1,278.88

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Solution

The fourth proportional to 1,413.16, 2,126.64 and 1,278.88 is: 1,924.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.16 : 2,126.64 = 1,278.88 : x
  2. Step 2: Convert to fraction form
    1,413.16/2,126.64 = 1,278.88/x
  3. Step 3: Cross multiply
    1,413.16x = 2,126.64 × 1,278.88
  4. Step 4: Simplify right side
    1,413.16x = 2,719,717.36
  5. Step 5: Solve for x
    x = 2,719,717.36/1,413.16
  6. Step 6: Final answer
    x = 1,924.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.