Home / 3,511.20-4,845.47-1,917.86

Finding the Fourth Proportional to 3,511.20, 4,845.47 and 1,917.86

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Solution

The fourth proportional to 3,511.20, 4,845.47 and 1,917.86 is: 2,646.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.20 : 4,845.47 = 1,917.86 : x
  2. Step 2: Convert to fraction form
    3,511.20/4,845.47 = 1,917.86/x
  3. Step 3: Cross multiply
    3,511.20x = 4,845.47 × 1,917.86
  4. Step 4: Simplify right side
    3,511.20x = 9,292,933.09
  5. Step 5: Solve for x
    x = 9,292,933.09/3,511.20
  6. Step 6: Final answer
    x = 2,646.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.