Home / 2,486.85-3,431.77-1,367.72

Finding the Fourth Proportional to 2,486.85, 3,431.77 and 1,367.72

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Solution

The fourth proportional to 2,486.85, 3,431.77 and 1,367.72 is: 1,887.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.85 : 3,431.77 = 1,367.72 : x
  2. Step 2: Convert to fraction form
    2,486.85/3,431.77 = 1,367.72/x
  3. Step 3: Cross multiply
    2,486.85x = 3,431.77 × 1,367.72
  4. Step 4: Simplify right side
    2,486.85x = 4,693,692.76
  5. Step 5: Solve for x
    x = 4,693,692.76/2,486.85
  6. Step 6: Final answer
    x = 1,887.40

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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.