Home / 2,128.56-3,190.01-1,030.74

Finding the Fourth Proportional to 2,128.56, 3,190.01 and 1,030.74

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Solution

The fourth proportional to 2,128.56, 3,190.01 and 1,030.74 is: 1,544.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.56 : 3,190.01 = 1,030.74 : x
  2. Step 2: Convert to fraction form
    2,128.56/3,190.01 = 1,030.74/x
  3. Step 3: Cross multiply
    2,128.56x = 3,190.01 × 1,030.74
  4. Step 4: Simplify right side
    2,128.56x = 3,288,065.75
  5. Step 5: Solve for x
    x = 3,288,065.75/2,128.56
  6. Step 6: Final answer
    x = 1,544.74

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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.