Home / 2,389.65-3,579.57-1,413.39

Finding the Fourth Proportional to 2,389.65, 3,579.57 and 1,413.39

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Solution

The fourth proportional to 2,389.65, 3,579.57 and 1,413.39 is: 2,117.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.65 : 3,579.57 = 1,413.39 : x
  2. Step 2: Convert to fraction form
    2,389.65/3,579.57 = 1,413.39/x
  3. Step 3: Cross multiply
    2,389.65x = 3,579.57 × 1,413.39
  4. Step 4: Simplify right side
    2,389.65x = 5,059,328.44
  5. Step 5: Solve for x
    x = 5,059,328.44/2,389.65
  6. Step 6: Final answer
    x = 2,117.18

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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.