Home / 1,812.40-2,718.60-837.96

Finding the Fourth Proportional to 1,812.40, 2,718.60 and 837.96

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Solution

The fourth proportional to 1,812.40, 2,718.60 and 837.96 is: 1,256.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.40 : 2,718.60 = 837.96 : x
  2. Step 2: Convert to fraction form
    1,812.40/2,718.60 = 837.96/x
  3. Step 3: Cross multiply
    1,812.40x = 2,718.60 × 837.96
  4. Step 4: Simplify right side
    1,812.40x = 2,278,078.06
  5. Step 5: Solve for x
    x = 2,278,078.06/1,812.40
  6. Step 6: Final answer
    x = 1,256.94

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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.