Home / 1,413.01-2,118.74-1,122.38

Finding the Fourth Proportional to 1,413.01, 2,118.74 and 1,122.38

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Solution

The fourth proportional to 1,413.01, 2,118.74 and 1,122.38 is: 1,682.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.01 : 2,118.74 = 1,122.38 : x
  2. Step 2: Convert to fraction form
    1,413.01/2,118.74 = 1,122.38/x
  3. Step 3: Cross multiply
    1,413.01x = 2,118.74 × 1,122.38
  4. Step 4: Simplify right side
    1,413.01x = 2,378,031.40
  5. Step 5: Solve for x
    x = 2,378,031.40/1,413.01
  6. Step 6: Final answer
    x = 1,682.95

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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.