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Finding the Fourth Proportional to 8,968.19, 12,373.63 and 5,382.20

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Solution

The fourth proportional to 8,968.19, 12,373.63 and 5,382.20 is: 7,425.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.19 : 12,373.63 = 5,382.20 : x
  2. Step 2: Convert to fraction form
    8,968.19/12,373.63 = 5,382.20/x
  3. Step 3: Cross multiply
    8,968.19x = 12,373.63 × 5,382.20
  4. Step 4: Simplify right side
    8,968.19x = 66,597,368.86
  5. Step 5: Solve for x
    x = 66,597,368.86/8,968.19
  6. Step 6: Final answer
    x = 7,425.96

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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.