Home / 1,817.28-2,507.62-1,020.64

Finding the Fourth Proportional to 1,817.28, 2,507.62 and 1,020.64

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Solution

The fourth proportional to 1,817.28, 2,507.62 and 1,020.64 is: 1,408.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.28 : 2,507.62 = 1,020.64 : x
  2. Step 2: Convert to fraction form
    1,817.28/2,507.62 = 1,020.64/x
  3. Step 3: Cross multiply
    1,817.28x = 2,507.62 × 1,020.64
  4. Step 4: Simplify right side
    1,817.28x = 2,559,377.28
  5. Step 5: Solve for x
    x = 2,559,377.28/1,817.28
  6. Step 6: Final answer
    x = 1,408.36

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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.