Home / 1,861.18-2,568.38-1,021.92

Finding the Fourth Proportional to 1,861.18, 2,568.38 and 1,021.92

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Solution

The fourth proportional to 1,861.18, 2,568.38 and 1,021.92 is: 1,410.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.18 : 2,568.38 = 1,021.92 : x
  2. Step 2: Convert to fraction form
    1,861.18/2,568.38 = 1,021.92/x
  3. Step 3: Cross multiply
    1,861.18x = 2,568.38 × 1,021.92
  4. Step 4: Simplify right side
    1,861.18x = 2,624,678.89
  5. Step 5: Solve for x
    x = 2,624,678.89/1,861.18
  6. Step 6: Final answer
    x = 1,410.22

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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.