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Finding the Fourth Proportional to 6,968.78, 9,621.42 and 4,319

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Solution

The fourth proportional to 6,968.78, 9,621.42 and 4,319 is: 5,963.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,968.78 : 9,621.42 = 4,319 : x
  2. Step 2: Convert to fraction form
    6,968.78/9,621.42 = 4,319/x
  3. Step 3: Cross multiply
    6,968.78x = 9,621.42 × 4,319
  4. Step 4: Simplify right side
    6,968.78x = 41,554,912.98
  5. Step 5: Solve for x
    x = 41,554,912.98/6,968.78
  6. Step 6: Final answer
    x = 5,963.01

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1.5x scale

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.