Home / 2,919.76-4,029.36-1,661.00

Finding the Fourth Proportional to 2,919.76, 4,029.36 and 1,661.00

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Solution

The fourth proportional to 2,919.76, 4,029.36 and 1,661.00 is: 2,292.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.76 : 4,029.36 = 1,661.00 : x
  2. Step 2: Convert to fraction form
    2,919.76/4,029.36 = 1,661.00/x
  3. Step 3: Cross multiply
    2,919.76x = 4,029.36 × 1,661.00
  4. Step 4: Simplify right side
    2,919.76x = 6,692,740.58
  5. Step 5: Solve for x
    x = 6,692,740.58/2,919.76
  6. Step 6: Final answer
    x = 2,292.22

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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.