Home / 1,637.20-2,455.37-814.87

Finding the Fourth Proportional to 1,637.20, 2,455.37 and 814.87

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Solution

The fourth proportional to 1,637.20, 2,455.37 and 814.87 is: 1,222.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.20 : 2,455.37 = 814.87 : x
  2. Step 2: Convert to fraction form
    1,637.20/2,455.37 = 814.87/x
  3. Step 3: Cross multiply
    1,637.20x = 2,455.37 × 814.87
  4. Step 4: Simplify right side
    1,637.20x = 2,000,791.00
  5. Step 5: Solve for x
    x = 2,000,791.00/1,637.20
  6. Step 6: Final answer
    x = 1,222.08

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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.