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Finding the Fourth Proportional to 9,676.05, 13,354.05 and 5,428.25

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Solution

The fourth proportional to 9,676.05, 13,354.05 and 5,428.25 is: 7,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,676.05 : 13,354.05 = 5,428.25 : x
  2. Step 2: Convert to fraction form
    9,676.05/13,354.05 = 5,428.25/x
  3. Step 3: Cross multiply
    9,676.05x = 13,354.05 × 5,428.25
  4. Step 4: Simplify right side
    9,676.05x = 72,489,055.14
  5. Step 5: Solve for x
    x = 72,489,055.14/9,676.05
  6. Step 6: Final answer
    x = 7,491.60

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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.