Home / 1,921.92-2,653.80-1,567.89

Finding the Fourth Proportional to 1,921.92, 2,653.80 and 1,567.89

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Solution

The fourth proportional to 1,921.92, 2,653.80 and 1,567.89 is: 2,164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.92 : 2,653.80 = 1,567.89 : x
  2. Step 2: Convert to fraction form
    1,921.92/2,653.80 = 1,567.89/x
  3. Step 3: Cross multiply
    1,921.92x = 2,653.80 × 1,567.89
  4. Step 4: Simplify right side
    1,921.92x = 4,160,866.48
  5. Step 5: Solve for x
    x = 4,160,866.48/1,921.92
  6. Step 6: Final answer
    x = 2,164.95

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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.