Home / 2,190.75-3,023.37-1,259.31

Finding the Fourth Proportional to 2,190.75, 3,023.37 and 1,259.31

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Solution

The fourth proportional to 2,190.75, 3,023.37 and 1,259.31 is: 1,737.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.75 : 3,023.37 = 1,259.31 : x
  2. Step 2: Convert to fraction form
    2,190.75/3,023.37 = 1,259.31/x
  3. Step 3: Cross multiply
    2,190.75x = 3,023.37 × 1,259.31
  4. Step 4: Simplify right side
    2,190.75x = 3,807,360.07
  5. Step 5: Solve for x
    x = 3,807,360.07/2,190.75
  6. Step 6: Final answer
    x = 1,737.93

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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.