Home / 2,315.75-3,195.74-1,267.82

Finding the Fourth Proportional to 2,315.75, 3,195.74 and 1,267.82

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Solution

The fourth proportional to 2,315.75, 3,195.74 and 1,267.82 is: 1,749.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.75 : 3,195.74 = 1,267.82 : x
  2. Step 2: Convert to fraction form
    2,315.75/3,195.74 = 1,267.82/x
  3. Step 3: Cross multiply
    2,315.75x = 3,195.74 × 1,267.82
  4. Step 4: Simplify right side
    2,315.75x = 4,051,600.77
  5. Step 5: Solve for x
    x = 4,051,600.77/2,315.75
  6. Step 6: Final answer
    x = 1,749.58

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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.