Home / 2,315.54-3,195.45-1,267.61

Finding the Fourth Proportional to 2,315.54, 3,195.45 and 1,267.61

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Solution

The fourth proportional to 2,315.54, 3,195.45 and 1,267.61 is: 1,749.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.54 : 3,195.45 = 1,267.61 : x
  2. Step 2: Convert to fraction form
    2,315.54/3,195.45 = 1,267.61/x
  3. Step 3: Cross multiply
    2,315.54x = 3,195.45 × 1,267.61
  4. Step 4: Simplify right side
    2,315.54x = 4,050,568.40
  5. Step 5: Solve for x
    x = 4,050,568.40/2,315.54
  6. Step 6: Final answer
    x = 1,749.30

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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.