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Finding the Fourth Proportional to 6,720.65, 10,078.47 and 1,975.38

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Solution

The fourth proportional to 6,720.65, 10,078.47 and 1,975.38 is: 2,962.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.65 : 10,078.47 = 1,975.38 : x
  2. Step 2: Convert to fraction form
    6,720.65/10,078.47 = 1,975.38/x
  3. Step 3: Cross multiply
    6,720.65x = 10,078.47 × 1,975.38
  4. Step 4: Simplify right side
    6,720.65x = 19,908,793.06
  5. Step 5: Solve for x
    x = 19,908,793.06/6,720.65
  6. Step 6: Final answer
    x = 2,962.33

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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.