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Finding the Fourth Proportional to 7,222.98, 9,968.39 and 4,389.71

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Solution

The fourth proportional to 7,222.98, 9,968.39 and 4,389.71 is: 6,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.98 : 9,968.39 = 4,389.71 : x
  2. Step 2: Convert to fraction form
    7,222.98/9,968.39 = 4,389.71/x
  3. Step 3: Cross multiply
    7,222.98x = 9,968.39 × 4,389.71
  4. Step 4: Simplify right side
    7,222.98x = 43,758,269.48
  5. Step 5: Solve for x
    x = 43,758,269.48/7,222.98
  6. Step 6: Final answer
    x = 6,058.20

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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.