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Finding the Fourth Proportional to 9,005.10, 13,491.45 and 7,968.30

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Solution

The fourth proportional to 9,005.10, 13,491.45 and 7,968.30 is: 11,938.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,005.10 : 13,491.45 = 7,968.30 : x
  2. Step 2: Convert to fraction form
    9,005.10/13,491.45 = 7,968.30/x
  3. Step 3: Cross multiply
    9,005.10x = 13,491.45 × 7,968.30
  4. Step 4: Simplify right side
    9,005.10x = 107,503,921.04
  5. Step 5: Solve for x
    x = 107,503,921.04/9,005.10
  6. Step 6: Final answer
    x = 11,938.12

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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.