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Finding the Fourth Proportional to 5,622.80, 8,422.05 and 4,893.80

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Solution

The fourth proportional to 5,622.80, 8,422.05 and 4,893.80 is: 7,330.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,622.80 : 8,422.05 = 4,893.80 : x
  2. Step 2: Convert to fraction form
    5,622.80/8,422.05 = 4,893.80/x
  3. Step 3: Cross multiply
    5,622.80x = 8,422.05 × 4,893.80
  4. Step 4: Simplify right side
    5,622.80x = 41,215,828.29
  5. Step 5: Solve for x
    x = 41,215,828.29/5,622.80
  6. Step 6: Final answer
    x = 7,330.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.