Home / 3,308.70-4,569-2,131.77

Finding the Fourth Proportional to 3,308.70, 4,569 and 2,131.77

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Solution

The fourth proportional to 3,308.70, 4,569 and 2,131.77 is: 2,943.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,308.70 : 4,569 = 2,131.77 : x
  2. Step 2: Convert to fraction form
    3,308.70/4,569 = 2,131.77/x
  3. Step 3: Cross multiply
    3,308.70x = 4,569 × 2,131.77
  4. Step 4: Simplify right side
    3,308.70x = 9,740,057.13
  5. Step 5: Solve for x
    x = 9,740,057.13/3,308.70
  6. Step 6: Final answer
    x = 2,943.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.