Home / 3,391.38-5,086.55-1,312.35

Finding the Fourth Proportional to 3,391.38, 5,086.55 and 1,312.35

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Solution

The fourth proportional to 3,391.38, 5,086.55 and 1,312.35 is: 1,968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.38 : 5,086.55 = 1,312.35 : x
  2. Step 2: Convert to fraction form
    3,391.38/5,086.55 = 1,312.35/x
  3. Step 3: Cross multiply
    3,391.38x = 5,086.55 × 1,312.35
  4. Step 4: Simplify right side
    3,391.38x = 6,675,327.33
  5. Step 5: Solve for x
    x = 6,675,327.33/3,391.38
  6. Step 6: Final answer
    x = 1,968.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.