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Finding the Fourth Proportional to 9,218.99, 13,828.56 and 2,645.39

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Solution

The fourth proportional to 9,218.99, 13,828.56 and 2,645.39 is: 3,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.99 : 13,828.56 = 2,645.39 : x
  2. Step 2: Convert to fraction form
    9,218.99/13,828.56 = 2,645.39/x
  3. Step 3: Cross multiply
    9,218.99x = 13,828.56 × 2,645.39
  4. Step 4: Simplify right side
    9,218.99x = 36,581,875.12
  5. Step 5: Solve for x
    x = 36,581,875.12/9,218.99
  6. Step 6: Final answer
    x = 3,968.10

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Similar ratio
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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.