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Finding the Fourth Proportional to 9,017, 12,443.48 and 5,479.60

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Solution

The fourth proportional to 9,017, 12,443.48 and 5,479.60 is: 7,561.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,017 : 12,443.48 = 5,479.60 : x
  2. Step 2: Convert to fraction form
    9,017/12,443.48 = 5,479.60/x
  3. Step 3: Cross multiply
    9,017x = 12,443.48 × 5,479.60
  4. Step 4: Simplify right side
    9,017x = 68,185,293.01
  5. Step 5: Solve for x
    x = 68,185,293.01/9,017
  6. Step 6: Final answer
    x = 7,561.86

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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.