Home / 2,686.77-3,704.75-1,690.83

Finding the Fourth Proportional to 2,686.77, 3,704.75 and 1,690.83

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Solution

The fourth proportional to 2,686.77, 3,704.75 and 1,690.83 is: 2,331.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.77 : 3,704.75 = 1,690.83 : x
  2. Step 2: Convert to fraction form
    2,686.77/3,704.75 = 1,690.83/x
  3. Step 3: Cross multiply
    2,686.77x = 3,704.75 × 1,690.83
  4. Step 4: Simplify right side
    2,686.77x = 6,264,093.99
  5. Step 5: Solve for x
    x = 6,264,093.99/2,686.77
  6. Step 6: Final answer
    x = 2,331.46

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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.