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Finding the Fourth Proportional to 2,077.79, 3,116.68 and 616.83

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Solution

The fourth proportional to 2,077.79, 3,116.68 and 616.83 is: 925.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.79 : 3,116.68 = 616.83 : x
  2. Step 2: Convert to fraction form
    2,077.79/3,116.68 = 616.83/x
  3. Step 3: Cross multiply
    2,077.79x = 3,116.68 × 616.83
  4. Step 4: Simplify right side
    2,077.79x = 1,922,461.72
  5. Step 5: Solve for x
    x = 1,922,461.72/2,077.79
  6. Step 6: Final answer
    x = 925.24

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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.