Home / 1,451.23-2,161.90-1,379.95

Finding the Fourth Proportional to 1,451.23, 2,161.90 and 1,379.95

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Solution

The fourth proportional to 1,451.23, 2,161.90 and 1,379.95 is: 2,055.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.23 : 2,161.90 = 1,379.95 : x
  2. Step 2: Convert to fraction form
    1,451.23/2,161.90 = 1,379.95/x
  3. Step 3: Cross multiply
    1,451.23x = 2,161.90 × 1,379.95
  4. Step 4: Simplify right side
    1,451.23x = 2,983,313.91
  5. Step 5: Solve for x
    x = 2,983,313.91/1,451.23
  6. Step 6: Final answer
    x = 2,055.71

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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.