Home / 1,920.84-2,648.58-1,669.96

Finding the Fourth Proportional to 1,920.84, 2,648.58 and 1,669.96

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Solution

The fourth proportional to 1,920.84, 2,648.58 and 1,669.96 is: 2,302.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.84 : 2,648.58 = 1,669.96 : x
  2. Step 2: Convert to fraction form
    1,920.84/2,648.58 = 1,669.96/x
  3. Step 3: Cross multiply
    1,920.84x = 2,648.58 × 1,669.96
  4. Step 4: Simplify right side
    1,920.84x = 4,423,022.66
  5. Step 5: Solve for x
    x = 4,423,022.66/1,920.84
  6. Step 6: Final answer
    x = 2,302.65

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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.