Home / 1,917.38-2,646.16-1,131.68

Finding the Fourth Proportional to 1,917.38, 2,646.16 and 1,131.68

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Solution

The fourth proportional to 1,917.38, 2,646.16 and 1,131.68 is: 1,561.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.38 : 2,646.16 = 1,131.68 : x
  2. Step 2: Convert to fraction form
    1,917.38/2,646.16 = 1,131.68/x
  3. Step 3: Cross multiply
    1,917.38x = 2,646.16 × 1,131.68
  4. Step 4: Simplify right side
    1,917.38x = 2,994,606.35
  5. Step 5: Solve for x
    x = 2,994,606.35/1,917.38
  6. Step 6: Final answer
    x = 1,561.82

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Double scale
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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.