Home / 1,917.22-2,646.24-1,131.52

Finding the Fourth Proportional to 1,917.22, 2,646.24 and 1,131.52

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Solution

The fourth proportional to 1,917.22, 2,646.24 and 1,131.52 is: 1,561.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.22 : 2,646.24 = 1,131.52 : x
  2. Step 2: Convert to fraction form
    1,917.22/2,646.24 = 1,131.52/x
  3. Step 3: Cross multiply
    1,917.22x = 2,646.24 × 1,131.52
  4. Step 4: Simplify right side
    1,917.22x = 2,994,273.48
  5. Step 5: Solve for x
    x = 2,994,273.48/1,917.22
  6. Step 6: Final answer
    x = 1,561.78

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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.