Home / 2,206.23-3,308.50-645.71

Finding the Fourth Proportional to 2,206.23, 3,308.50 and 645.71

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Solution

The fourth proportional to 2,206.23, 3,308.50 and 645.71 is: 968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.23 : 3,308.50 = 645.71 : x
  2. Step 2: Convert to fraction form
    2,206.23/3,308.50 = 645.71/x
  3. Step 3: Cross multiply
    2,206.23x = 3,308.50 × 645.71
  4. Step 4: Simplify right side
    2,206.23x = 2,136,331.54
  5. Step 5: Solve for x
    x = 2,136,331.54/2,206.23
  6. Step 6: Final answer
    x = 968.32

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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.