Home / 1,921.67-2,640.41-1,528.01

Finding the Fourth Proportional to 1,921.67, 2,640.41 and 1,528.01

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Solution

The fourth proportional to 1,921.67, 2,640.41 and 1,528.01 is: 2,099.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.67 : 2,640.41 = 1,528.01 : x
  2. Step 2: Convert to fraction form
    1,921.67/2,640.41 = 1,528.01/x
  3. Step 3: Cross multiply
    1,921.67x = 2,640.41 × 1,528.01
  4. Step 4: Simplify right side
    1,921.67x = 4,034,552.04
  5. Step 5: Solve for x
    x = 4,034,552.04/1,921.67
  6. Step 6: Final answer
    x = 2,099.51

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.