Home / 3,239.48-4,855.53-1,389.65

Finding the Fourth Proportional to 3,239.48, 4,855.53 and 1,389.65

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Solution

The fourth proportional to 3,239.48, 4,855.53 and 1,389.65 is: 2,082.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.48 : 4,855.53 = 1,389.65 : x
  2. Step 2: Convert to fraction form
    3,239.48/4,855.53 = 1,389.65/x
  3. Step 3: Cross multiply
    3,239.48x = 4,855.53 × 1,389.65
  4. Step 4: Simplify right side
    3,239.48x = 6,747,462.99
  5. Step 5: Solve for x
    x = 6,747,462.99/3,239.48
  6. Step 6: Final answer
    x = 2,082.89

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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.