Home / 1,628.40-2,246.22-1,155.64

Finding the Fourth Proportional to 1,628.40, 2,246.22 and 1,155.64

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Solution

The fourth proportional to 1,628.40, 2,246.22 and 1,155.64 is: 1,594.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.40 : 2,246.22 = 1,155.64 : x
  2. Step 2: Convert to fraction form
    1,628.40/2,246.22 = 1,155.64/x
  3. Step 3: Cross multiply
    1,628.40x = 2,246.22 × 1,155.64
  4. Step 4: Simplify right side
    1,628.40x = 2,595,821.68
  5. Step 5: Solve for x
    x = 2,595,821.68/1,628.40
  6. Step 6: Final answer
    x = 1,594.09

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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.