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Finding the Fourth Proportional to 8,893.31, 12,263.55 and 7,638.50

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Solution

The fourth proportional to 8,893.31, 12,263.55 and 7,638.50 is: 10,533.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,893.31 : 12,263.55 = 7,638.50 : x
  2. Step 2: Convert to fraction form
    8,893.31/12,263.55 = 7,638.50/x
  3. Step 3: Cross multiply
    8,893.31x = 12,263.55 × 7,638.50
  4. Step 4: Simplify right side
    8,893.31x = 93,675,126.68
  5. Step 5: Solve for x
    x = 93,675,126.68/8,893.31
  6. Step 6: Final answer
    x = 10,533.21

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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.