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Finding the Fourth Proportional to 8,968.90, 12,376.89 and 5,192.22

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Solution

The fourth proportional to 8,968.90, 12,376.89 and 5,192.22 is: 7,165.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.90 : 12,376.89 = 5,192.22 : x
  2. Step 2: Convert to fraction form
    8,968.90/12,376.89 = 5,192.22/x
  3. Step 3: Cross multiply
    8,968.90x = 12,376.89 × 5,192.22
  4. Step 4: Simplify right side
    8,968.90x = 64,263,562.74
  5. Step 5: Solve for x
    x = 64,263,562.74/8,968.90
  6. Step 6: Final answer
    x = 7,165.16

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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.