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Finding the Fourth Proportional to 8,945.58, 13,390.50 and 8,006.58

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Solution

The fourth proportional to 8,945.58, 13,390.50 and 8,006.58 is: 11,984.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.58 : 13,390.50 = 8,006.58 : x
  2. Step 2: Convert to fraction form
    8,945.58/13,390.50 = 8,006.58/x
  3. Step 3: Cross multiply
    8,945.58x = 13,390.50 × 8,006.58
  4. Step 4: Simplify right side
    8,945.58x = 107,212,109.49
  5. Step 5: Solve for x
    x = 107,212,109.49/8,945.58
  6. Step 6: Final answer
    x = 11,984.93

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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.