Home / 2,054.18-3,081.28-515.18

Finding the Fourth Proportional to 2,054.18, 3,081.28 and 515.18

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Solution

The fourth proportional to 2,054.18, 3,081.28 and 515.18 is: 772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,054.18 : 3,081.28 = 515.18 : x
  2. Step 2: Convert to fraction form
    2,054.18/3,081.28 = 515.18/x
  3. Step 3: Cross multiply
    2,054.18x = 3,081.28 × 515.18
  4. Step 4: Simplify right side
    2,054.18x = 1,587,413.83
  5. Step 5: Solve for x
    x = 1,587,413.83/2,054.18
  6. Step 6: Final answer
    x = 772.77

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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.