Home / 1,430.22-2,146.86-1,085.79

Finding the Fourth Proportional to 1,430.22, 2,146.86 and 1,085.79

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Solution

The fourth proportional to 1,430.22, 2,146.86 and 1,085.79 is: 1,629.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.22 : 2,146.86 = 1,085.79 : x
  2. Step 2: Convert to fraction form
    1,430.22/2,146.86 = 1,085.79/x
  3. Step 3: Cross multiply
    1,430.22x = 2,146.86 × 1,085.79
  4. Step 4: Simplify right side
    1,430.22x = 2,331,039.12
  5. Step 5: Solve for x
    x = 2,331,039.12/1,430.22
  6. Step 6: Final answer
    x = 1,629.85

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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.