Home / 2,149.79-3,220.56-1,455.26

Finding the Fourth Proportional to 2,149.79, 3,220.56 and 1,455.26

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Solution

The fourth proportional to 2,149.79, 3,220.56 and 1,455.26 is: 2,180.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.79 : 3,220.56 = 1,455.26 : x
  2. Step 2: Convert to fraction form
    2,149.79/3,220.56 = 1,455.26/x
  3. Step 3: Cross multiply
    2,149.79x = 3,220.56 × 1,455.26
  4. Step 4: Simplify right side
    2,149.79x = 4,686,732.40
  5. Step 5: Solve for x
    x = 4,686,732.40/2,149.79
  6. Step 6: Final answer
    x = 2,180.09

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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.