Home / 1,647.57-2,465.55-1,387.83

Finding the Fourth Proportional to 1,647.57, 2,465.55 and 1,387.83

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Solution

The fourth proportional to 1,647.57, 2,465.55 and 1,387.83 is: 2,076.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.57 : 2,465.55 = 1,387.83 : x
  2. Step 2: Convert to fraction form
    1,647.57/2,465.55 = 1,387.83/x
  3. Step 3: Cross multiply
    1,647.57x = 2,465.55 × 1,387.83
  4. Step 4: Simplify right side
    1,647.57x = 3,421,764.26
  5. Step 5: Solve for x
    x = 3,421,764.26/1,647.57
  6. Step 6: Final answer
    x = 2,076.86

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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.