Home / 3,087.94-4,261.65-1,690.90

Finding the Fourth Proportional to 3,087.94, 4,261.65 and 1,690.90

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Solution

The fourth proportional to 3,087.94, 4,261.65 and 1,690.90 is: 2,333.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.94 : 4,261.65 = 1,690.90 : x
  2. Step 2: Convert to fraction form
    3,087.94/4,261.65 = 1,690.90/x
  3. Step 3: Cross multiply
    3,087.94x = 4,261.65 × 1,690.90
  4. Step 4: Simplify right side
    3,087.94x = 7,206,023.99
  5. Step 5: Solve for x
    x = 7,206,023.99/3,087.94
  6. Step 6: Final answer
    x = 2,333.60

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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.