Home / 2,120.14-2,927.31-1,413.65

Finding the Fourth Proportional to 2,120.14, 2,927.31 and 1,413.65

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Solution

The fourth proportional to 2,120.14, 2,927.31 and 1,413.65 is: 1,951.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.14 : 2,927.31 = 1,413.65 : x
  2. Step 2: Convert to fraction form
    2,120.14/2,927.31 = 1,413.65/x
  3. Step 3: Cross multiply
    2,120.14x = 2,927.31 × 1,413.65
  4. Step 4: Simplify right side
    2,120.14x = 4,138,199.76
  5. Step 5: Solve for x
    x = 4,138,199.76/2,120.14
  6. Step 6: Final answer
    x = 1,951.85

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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.