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Finding the Fourth Proportional to 8,893.12, 12,263.29 and 7,638.32

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Solution

The fourth proportional to 8,893.12, 12,263.29 and 7,638.32 is: 10,532.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,893.12 : 12,263.29 = 7,638.32 : x
  2. Step 2: Convert to fraction form
    8,893.12/12,263.29 = 7,638.32/x
  3. Step 3: Cross multiply
    8,893.12x = 12,263.29 × 7,638.32
  4. Step 4: Simplify right side
    8,893.12x = 93,670,933.27
  5. Step 5: Solve for x
    x = 93,670,933.27/8,893.12
  6. Step 6: Final answer
    x = 10,532.97

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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.