Home / 2,919.86-4,029.65-1,661.30

Finding the Fourth Proportional to 2,919.86, 4,029.65 and 1,661.30

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Solution

The fourth proportional to 2,919.86, 4,029.65 and 1,661.30 is: 2,292.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.86 : 4,029.65 = 1,661.30 : x
  2. Step 2: Convert to fraction form
    2,919.86/4,029.65 = 1,661.30/x
  3. Step 3: Cross multiply
    2,919.86x = 4,029.65 × 1,661.30
  4. Step 4: Simplify right side
    2,919.86x = 6,694,459.31
  5. Step 5: Solve for x
    x = 6,694,459.31/2,919.86
  6. Step 6: Final answer
    x = 2,292.73

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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.