Home / 3,015.97-4,161.99-1,689.67

Finding the Fourth Proportional to 3,015.97, 4,161.99 and 1,689.67

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Solution

The fourth proportional to 3,015.97, 4,161.99 and 1,689.67 is: 2,331.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.97 : 4,161.99 = 1,689.67 : x
  2. Step 2: Convert to fraction form
    3,015.97/4,161.99 = 1,689.67/x
  3. Step 3: Cross multiply
    3,015.97x = 4,161.99 × 1,689.67
  4. Step 4: Simplify right side
    3,015.97x = 7,032,389.64
  5. Step 5: Solve for x
    x = 7,032,389.64/3,015.97
  6. Step 6: Final answer
    x = 2,331.72

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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.