Home / 2,918.79-4,025.66-1,739.61

Finding the Fourth Proportional to 2,918.79, 4,025.66 and 1,739.61

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Solution

The fourth proportional to 2,918.79, 4,025.66 and 1,739.61 is: 2,399.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.79 : 4,025.66 = 1,739.61 : x
  2. Step 2: Convert to fraction form
    2,918.79/4,025.66 = 1,739.61/x
  3. Step 3: Cross multiply
    2,918.79x = 4,025.66 × 1,739.61
  4. Step 4: Simplify right side
    2,918.79x = 7,003,069.69
  5. Step 5: Solve for x
    x = 7,003,069.69/2,918.79
  6. Step 6: Final answer
    x = 2,399.31

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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.