Home / 2,381.83-3,286.65-1,319.47

Finding the Fourth Proportional to 2,381.83, 3,286.65 and 1,319.47

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Solution

The fourth proportional to 2,381.83, 3,286.65 and 1,319.47 is: 1,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.83 : 3,286.65 = 1,319.47 : x
  2. Step 2: Convert to fraction form
    2,381.83/3,286.65 = 1,319.47/x
  3. Step 3: Cross multiply
    2,381.83x = 3,286.65 × 1,319.47
  4. Step 4: Simplify right side
    2,381.83x = 4,336,636.08
  5. Step 5: Solve for x
    x = 4,336,636.08/2,381.83
  6. Step 6: Final answer
    x = 1,820.72

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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.