Home / 2,381.19-3,568.80-1,211.49

Finding the Fourth Proportional to 2,381.19, 3,568.80 and 1,211.49

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Solution

The fourth proportional to 2,381.19, 3,568.80 and 1,211.49 is: 1,815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.19 : 3,568.80 = 1,211.49 : x
  2. Step 2: Convert to fraction form
    2,381.19/3,568.80 = 1,211.49/x
  3. Step 3: Cross multiply
    2,381.19x = 3,568.80 × 1,211.49
  4. Step 4: Simplify right side
    2,381.19x = 4,323,565.51
  5. Step 5: Solve for x
    x = 4,323,565.51/2,381.19
  6. Step 6: Final answer
    x = 1,815.72

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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.