Home / 2,790.19-4,186.68-1,973.71

Finding the Fourth Proportional to 2,790.19, 4,186.68 and 1,973.71

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Solution

The fourth proportional to 2,790.19, 4,186.68 and 1,973.71 is: 2,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.19 : 4,186.68 = 1,973.71 : x
  2. Step 2: Convert to fraction form
    2,790.19/4,186.68 = 1,973.71/x
  3. Step 3: Cross multiply
    2,790.19x = 4,186.68 × 1,973.71
  4. Step 4: Simplify right side
    2,790.19x = 8,263,292.18
  5. Step 5: Solve for x
    x = 8,263,292.18/2,790.19
  6. Step 6: Final answer
    x = 2,961.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.