Home / 2,428.08-3,636.70-2,111.68

Finding the Fourth Proportional to 2,428.08, 3,636.70 and 2,111.68

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Solution

The fourth proportional to 2,428.08, 3,636.70 and 2,111.68 is: 3,162.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.08 : 3,636.70 = 2,111.68 : x
  2. Step 2: Convert to fraction form
    2,428.08/3,636.70 = 2,111.68/x
  3. Step 3: Cross multiply
    2,428.08x = 3,636.70 × 2,111.68
  4. Step 4: Simplify right side
    2,428.08x = 7,679,546.66
  5. Step 5: Solve for x
    x = 7,679,546.66/2,428.08
  6. Step 6: Final answer
    x = 3,162.81

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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.