Home / 2,128.18-2,933.81-1,409.16

Finding the Fourth Proportional to 2,128.18, 2,933.81 and 1,409.16

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Solution

The fourth proportional to 2,128.18, 2,933.81 and 1,409.16 is: 1,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.18 : 2,933.81 = 1,409.16 : x
  2. Step 2: Convert to fraction form
    2,128.18/2,933.81 = 1,409.16/x
  3. Step 3: Cross multiply
    2,128.18x = 2,933.81 × 1,409.16
  4. Step 4: Simplify right side
    2,128.18x = 4,134,207.70
  5. Step 5: Solve for x
    x = 4,134,207.70/2,128.18
  6. Step 6: Final answer
    x = 1,942.60

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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.