Home / 1,896.96-2,616.40-1,307.68

Finding the Fourth Proportional to 1,896.96, 2,616.40 and 1,307.68

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Solution

The fourth proportional to 1,896.96, 2,616.40 and 1,307.68 is: 1,803.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896.96 : 2,616.40 = 1,307.68 : x
  2. Step 2: Convert to fraction form
    1,896.96/2,616.40 = 1,307.68/x
  3. Step 3: Cross multiply
    1,896.96x = 2,616.40 × 1,307.68
  4. Step 4: Simplify right side
    1,896.96x = 3,421,413.95
  5. Step 5: Solve for x
    x = 3,421,413.95/1,896.96
  6. Step 6: Final answer
    x = 1,803.63

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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.