Home / 2,572.36-3,879.70-2,489.23

Finding the Fourth Proportional to 2,572.36, 3,879.70 and 2,489.23

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Solution

The fourth proportional to 2,572.36, 3,879.70 and 2,489.23 is: 3,754.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.36 : 3,879.70 = 2,489.23 : x
  2. Step 2: Convert to fraction form
    2,572.36/3,879.70 = 2,489.23/x
  3. Step 3: Cross multiply
    2,572.36x = 3,879.70 × 2,489.23
  4. Step 4: Simplify right side
    2,572.36x = 9,657,464.26
  5. Step 5: Solve for x
    x = 9,657,464.26/2,572.36
  6. Step 6: Final answer
    x = 3,754.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.