Home / 1,916.11-2,644.68-1,170.69

Finding the Fourth Proportional to 1,916.11, 2,644.68 and 1,170.69

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Solution

The fourth proportional to 1,916.11, 2,644.68 and 1,170.69 is: 1,615.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.11 : 2,644.68 = 1,170.69 : x
  2. Step 2: Convert to fraction form
    1,916.11/2,644.68 = 1,170.69/x
  3. Step 3: Cross multiply
    1,916.11x = 2,644.68 × 1,170.69
  4. Step 4: Simplify right side
    1,916.11x = 3,096,100.43
  5. Step 5: Solve for x
    x = 3,096,100.43/1,916.11
  6. Step 6: Final answer
    x = 1,615.83

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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.