Home / 2,078.07-3,116.57-616.89

Finding the Fourth Proportional to 2,078.07, 3,116.57 and 616.89

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Solution

The fourth proportional to 2,078.07, 3,116.57 and 616.89 is: 925.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.07 : 3,116.57 = 616.89 : x
  2. Step 2: Convert to fraction form
    2,078.07/3,116.57 = 616.89/x
  3. Step 3: Cross multiply
    2,078.07x = 3,116.57 × 616.89
  4. Step 4: Simplify right side
    2,078.07x = 1,922,580.87
  5. Step 5: Solve for x
    x = 1,922,580.87/2,078.07
  6. Step 6: Final answer
    x = 925.18

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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.