Home / 2,161.19-3,221.23-2,038.16

Finding the Fourth Proportional to 2,161.19, 3,221.23 and 2,038.16

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Solution

The fourth proportional to 2,161.19, 3,221.23 and 2,038.16 is: 3,037.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.19 : 3,221.23 = 2,038.16 : x
  2. Step 2: Convert to fraction form
    2,161.19/3,221.23 = 2,038.16/x
  3. Step 3: Cross multiply
    2,161.19x = 3,221.23 × 2,038.16
  4. Step 4: Simplify right side
    2,161.19x = 6,565,371.95
  5. Step 5: Solve for x
    x = 6,565,371.95/2,161.19
  6. Step 6: Final answer
    x = 3,037.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.