Home / 2,315.21-3,194.85-1,267.07

Finding the Fourth Proportional to 2,315.21, 3,194.85 and 1,267.07

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Solution

The fourth proportional to 2,315.21, 3,194.85 and 1,267.07 is: 1,748.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.21 : 3,194.85 = 1,267.07 : x
  2. Step 2: Convert to fraction form
    2,315.21/3,194.85 = 1,267.07/x
  3. Step 3: Cross multiply
    2,315.21x = 3,194.85 × 1,267.07
  4. Step 4: Simplify right side
    2,315.21x = 4,048,082.62
  5. Step 5: Solve for x
    x = 4,048,082.62/2,315.21
  6. Step 6: Final answer
    x = 1,748.48

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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.