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Finding the Fourth Proportional to 8,989.88, 13,486.80 and 2,749.94

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Solution

The fourth proportional to 8,989.88, 13,486.80 and 2,749.94 is: 4,125.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.88 : 13,486.80 = 2,749.94 : x
  2. Step 2: Convert to fraction form
    8,989.88/13,486.80 = 2,749.94/x
  3. Step 3: Cross multiply
    8,989.88x = 13,486.80 × 2,749.94
  4. Step 4: Simplify right side
    8,989.88x = 37,087,890.79
  5. Step 5: Solve for x
    x = 37,087,890.79/8,989.88
  6. Step 6: Final answer
    x = 4,125.52

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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.