Home / 1,791.34-2,688.98-1,423.51

Finding the Fourth Proportional to 1,791.34, 2,688.98 and 1,423.51

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Solution

The fourth proportional to 1,791.34, 2,688.98 and 1,423.51 is: 2,136.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.34 : 2,688.98 = 1,423.51 : x
  2. Step 2: Convert to fraction form
    1,791.34/2,688.98 = 1,423.51/x
  3. Step 3: Cross multiply
    1,791.34x = 2,688.98 × 1,423.51
  4. Step 4: Simplify right side
    1,791.34x = 3,827,789.92
  5. Step 5: Solve for x
    x = 3,827,789.92/1,791.34
  6. Step 6: Final answer
    x = 2,136.83

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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.