Home / 1,628.18-2,247.78-1,308.32

Finding the Fourth Proportional to 1,628.18, 2,247.78 and 1,308.32

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Solution

The fourth proportional to 1,628.18, 2,247.78 and 1,308.32 is: 1,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.18 : 2,247.78 = 1,308.32 : x
  2. Step 2: Convert to fraction form
    1,628.18/2,247.78 = 1,308.32/x
  3. Step 3: Cross multiply
    1,628.18x = 2,247.78 × 1,308.32
  4. Step 4: Simplify right side
    1,628.18x = 2,940,815.53
  5. Step 5: Solve for x
    x = 2,940,815.53/1,628.18
  6. Step 6: Final answer
    x = 1,806.20

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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.