Home / 1,789.60-2,681.96-1,329.11

Finding the Fourth Proportional to 1,789.60, 2,681.96 and 1,329.11

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Solution

The fourth proportional to 1,789.60, 2,681.96 and 1,329.11 is: 1,991.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.60 : 2,681.96 = 1,329.11 : x
  2. Step 2: Convert to fraction form
    1,789.60/2,681.96 = 1,329.11/x
  3. Step 3: Cross multiply
    1,789.60x = 2,681.96 × 1,329.11
  4. Step 4: Simplify right side
    1,789.60x = 3,564,623.18
  5. Step 5: Solve for x
    x = 3,564,623.18/1,789.60
  6. Step 6: Final answer
    x = 1,991.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.