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Finding the Fourth Proportional to 8,283.42, 11,415.82 and 7,020.44

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Solution

The fourth proportional to 8,283.42, 11,415.82 and 7,020.44 is: 9,675.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,283.42 : 11,415.82 = 7,020.44 : x
  2. Step 2: Convert to fraction form
    8,283.42/11,415.82 = 7,020.44/x
  3. Step 3: Cross multiply
    8,283.42x = 11,415.82 × 7,020.44
  4. Step 4: Simplify right side
    8,283.42x = 80,144,079.36
  5. Step 5: Solve for x
    x = 80,144,079.36/8,283.42
  6. Step 6: Final answer
    x = 9,675.24

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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.