Home / 3,145.69-4,718.40-1,065.61

Finding the Fourth Proportional to 3,145.69, 4,718.40 and 1,065.61

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Solution

The fourth proportional to 3,145.69, 4,718.40 and 1,065.61 is: 1,598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.69 : 4,718.40 = 1,065.61 : x
  2. Step 2: Convert to fraction form
    3,145.69/4,718.40 = 1,065.61/x
  3. Step 3: Cross multiply
    3,145.69x = 4,718.40 × 1,065.61
  4. Step 4: Simplify right side
    3,145.69x = 5,027,974.22
  5. Step 5: Solve for x
    x = 5,027,974.22/3,145.69
  6. Step 6: Final answer
    x = 1,598.37

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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.