Home / 2,147.64-3,220.26-1,159.86

Finding the Fourth Proportional to 2,147.64, 3,220.26 and 1,159.86

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Solution

The fourth proportional to 2,147.64, 3,220.26 and 1,159.86 is: 1,739.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.64 : 3,220.26 = 1,159.86 : x
  2. Step 2: Convert to fraction form
    2,147.64/3,220.26 = 1,159.86/x
  3. Step 3: Cross multiply
    2,147.64x = 3,220.26 × 1,159.86
  4. Step 4: Simplify right side
    2,147.64x = 3,735,050.76
  5. Step 5: Solve for x
    x = 3,735,050.76/2,147.64
  6. Step 6: Final answer
    x = 1,739.14

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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.