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Finding the Fourth Proportional to 9,491.89, 14,239.20 and 2,918.63

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Solution

The fourth proportional to 9,491.89, 14,239.20 and 2,918.63 is: 4,378.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,491.89 : 14,239.20 = 2,918.63 : x
  2. Step 2: Convert to fraction form
    9,491.89/14,239.20 = 2,918.63/x
  3. Step 3: Cross multiply
    9,491.89x = 14,239.20 × 2,918.63
  4. Step 4: Simplify right side
    9,491.89x = 41,558,938.50
  5. Step 5: Solve for x
    x = 41,558,938.50/9,491.89
  6. Step 6: Final answer
    x = 4,378.36

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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.