Home / 2,087.22-2,879.53-1,247.95

Finding the Fourth Proportional to 2,087.22, 2,879.53 and 1,247.95

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Solution

The fourth proportional to 2,087.22, 2,879.53 and 1,247.95 is: 1,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.22 : 2,879.53 = 1,247.95 : x
  2. Step 2: Convert to fraction form
    2,087.22/2,879.53 = 1,247.95/x
  3. Step 3: Cross multiply
    2,087.22x = 2,879.53 × 1,247.95
  4. Step 4: Simplify right side
    2,087.22x = 3,593,509.46
  5. Step 5: Solve for x
    x = 3,593,509.46/2,087.22
  6. Step 6: Final answer
    x = 1,721.67

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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.