Home / 2,608.24-3,912.36-1,147.40

Finding the Fourth Proportional to 2,608.24, 3,912.36 and 1,147.40

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Solution

The fourth proportional to 2,608.24, 3,912.36 and 1,147.40 is: 1,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608.24 : 3,912.36 = 1,147.40 : x
  2. Step 2: Convert to fraction form
    2,608.24/3,912.36 = 1,147.40/x
  3. Step 3: Cross multiply
    2,608.24x = 3,912.36 × 1,147.40
  4. Step 4: Simplify right side
    2,608.24x = 4,489,041.86
  5. Step 5: Solve for x
    x = 4,489,041.86/2,608.24
  6. Step 6: Final answer
    x = 1,721.10

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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.