Home / 5,325.27-7,986.81-1,428.75

Finding the Fourth Proportional to 5,325.27, 7,986.81 and 1,428.75

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Solution

The fourth proportional to 5,325.27, 7,986.81 and 1,428.75 is: 2,142.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,325.27 : 7,986.81 = 1,428.75 : x
  2. Step 2: Convert to fraction form
    5,325.27/7,986.81 = 1,428.75/x
  3. Step 3: Cross multiply
    5,325.27x = 7,986.81 × 1,428.75
  4. Step 4: Simplify right side
    5,325.27x = 11,411,147.64
  5. Step 5: Solve for x
    x = 11,411,147.64/5,325.27
  6. Step 6: Final answer
    x = 2,142.83

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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.