Home / 3,240.48-4,857.03-1,390.65

Finding the Fourth Proportional to 3,240.48, 4,857.03 and 1,390.65

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Solution

The fourth proportional to 3,240.48, 4,857.03 and 1,390.65 is: 2,084.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.48 : 4,857.03 = 1,390.65 : x
  2. Step 2: Convert to fraction form
    3,240.48/4,857.03 = 1,390.65/x
  3. Step 3: Cross multiply
    3,240.48x = 4,857.03 × 1,390.65
  4. Step 4: Simplify right side
    3,240.48x = 6,754,404.48
  5. Step 5: Solve for x
    x = 6,754,404.48/3,240.48
  6. Step 6: Final answer
    x = 2,084.39

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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.