Home / 4,913.09-6,784.57-3,121.15

Finding the Fourth Proportional to 4,913.09, 6,784.57 and 3,121.15

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Solution

The fourth proportional to 4,913.09, 6,784.57 and 3,121.15 is: 4,310.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.09 : 6,784.57 = 3,121.15 : x
  2. Step 2: Convert to fraction form
    4,913.09/6,784.57 = 3,121.15/x
  3. Step 3: Cross multiply
    4,913.09x = 6,784.57 × 3,121.15
  4. Step 4: Simplify right side
    4,913.09x = 21,175,668.46
  5. Step 5: Solve for x
    x = 21,175,668.46/4,913.09
  6. Step 6: Final answer
    x = 4,310.05

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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.