Home / 2,869.50-3,960.39-1,628.22

Finding the Fourth Proportional to 2,869.50, 3,960.39 and 1,628.22

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Solution

The fourth proportional to 2,869.50, 3,960.39 and 1,628.22 is: 2,247.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.50 : 3,960.39 = 1,628.22 : x
  2. Step 2: Convert to fraction form
    2,869.50/3,960.39 = 1,628.22/x
  3. Step 3: Cross multiply
    2,869.50x = 3,960.39 × 1,628.22
  4. Step 4: Simplify right side
    2,869.50x = 6,448,386.21
  5. Step 5: Solve for x
    x = 6,448,386.21/2,869.50
  6. Step 6: Final answer
    x = 2,247.22

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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.