Home / 2,628.38-3,624.50-1,920.34

Finding the Fourth Proportional to 2,628.38, 3,624.50 and 1,920.34

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Solution

The fourth proportional to 2,628.38, 3,624.50 and 1,920.34 is: 2,648.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.38 : 3,624.50 = 1,920.34 : x
  2. Step 2: Convert to fraction form
    2,628.38/3,624.50 = 1,920.34/x
  3. Step 3: Cross multiply
    2,628.38x = 3,624.50 × 1,920.34
  4. Step 4: Simplify right side
    2,628.38x = 6,960,272.33
  5. Step 5: Solve for x
    x = 6,960,272.33/2,628.38
  6. Step 6: Final answer
    x = 2,648.12

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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.