Home / 2,389.41-3,586.23-1,279.71

Finding the Fourth Proportional to 2,389.41, 3,586.23 and 1,279.71

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Solution

The fourth proportional to 2,389.41, 3,586.23 and 1,279.71 is: 1,920.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.41 : 3,586.23 = 1,279.71 : x
  2. Step 2: Convert to fraction form
    2,389.41/3,586.23 = 1,279.71/x
  3. Step 3: Cross multiply
    2,389.41x = 3,586.23 × 1,279.71
  4. Step 4: Simplify right side
    2,389.41x = 4,589,334.39
  5. Step 5: Solve for x
    x = 4,589,334.39/2,389.41
  6. Step 6: Final answer
    x = 1,920.70

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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.