Home / 1,968.28-2,716.20-1,117.69

Finding the Fourth Proportional to 1,968.28, 2,716.20 and 1,117.69

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Solution

The fourth proportional to 1,968.28, 2,716.20 and 1,117.69 is: 1,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.28 : 2,716.20 = 1,117.69 : x
  2. Step 2: Convert to fraction form
    1,968.28/2,716.20 = 1,117.69/x
  3. Step 3: Cross multiply
    1,968.28x = 2,716.20 × 1,117.69
  4. Step 4: Simplify right side
    1,968.28x = 3,035,863.99
  5. Step 5: Solve for x
    x = 3,035,863.99/1,968.28
  6. Step 6: Final answer
    x = 1,542.40

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Half scale
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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.