Home / 3,315.43-4,942.65-3,159.91

Finding the Fourth Proportional to 3,315.43, 4,942.65 and 3,159.91

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Solution

The fourth proportional to 3,315.43, 4,942.65 and 3,159.91 is: 4,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.43 : 4,942.65 = 3,159.91 : x
  2. Step 2: Convert to fraction form
    3,315.43/4,942.65 = 3,159.91/x
  3. Step 3: Cross multiply
    3,315.43x = 4,942.65 × 3,159.91
  4. Step 4: Simplify right side
    3,315.43x = 15,618,321.26
  5. Step 5: Solve for x
    x = 15,618,321.26/3,315.43
  6. Step 6: Final answer
    x = 4,710.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.