Home / 2,381.83-3,286.80-1,319.57

Finding the Fourth Proportional to 2,381.83, 3,286.80 and 1,319.57

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Solution

The fourth proportional to 2,381.83, 3,286.80 and 1,319.57 is: 1,820.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.83 : 3,286.80 = 1,319.57 : x
  2. Step 2: Convert to fraction form
    2,381.83/3,286.80 = 1,319.57/x
  3. Step 3: Cross multiply
    2,381.83x = 3,286.80 × 1,319.57
  4. Step 4: Simplify right side
    2,381.83x = 4,337,146.24
  5. Step 5: Solve for x
    x = 4,337,146.24/2,381.83
  6. Step 6: Final answer
    x = 1,820.93

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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.