Home / 2,147.49-3,221.64-1,417.68

Finding the Fourth Proportional to 2,147.49, 3,221.64 and 1,417.68

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Solution

The fourth proportional to 2,147.49, 3,221.64 and 1,417.68 is: 2,126.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.49 : 3,221.64 = 1,417.68 : x
  2. Step 2: Convert to fraction form
    2,147.49/3,221.64 = 1,417.68/x
  3. Step 3: Cross multiply
    2,147.49x = 3,221.64 × 1,417.68
  4. Step 4: Simplify right side
    2,147.49x = 4,567,254.60
  5. Step 5: Solve for x
    x = 4,567,254.60/2,147.49
  6. Step 6: Final answer
    x = 2,126.79

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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.