Home / 2,836.68-3,916.52-2,172.34

Finding the Fourth Proportional to 2,836.68, 3,916.52 and 2,172.34

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Solution

The fourth proportional to 2,836.68, 3,916.52 and 2,172.34 is: 2,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.68 : 3,916.52 = 2,172.34 : x
  2. Step 2: Convert to fraction form
    2,836.68/3,916.52 = 2,172.34/x
  3. Step 3: Cross multiply
    2,836.68x = 3,916.52 × 2,172.34
  4. Step 4: Simplify right side
    2,836.68x = 8,508,013.06
  5. Step 5: Solve for x
    x = 8,508,013.06/2,836.68
  6. Step 6: Final answer
    x = 2,999.29

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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.