Home / 1,916.90-2,644.97-1,171.05

Finding the Fourth Proportional to 1,916.90, 2,644.97 and 1,171.05

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Solution

The fourth proportional to 1,916.90, 2,644.97 and 1,171.05 is: 1,615.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.90 : 2,644.97 = 1,171.05 : x
  2. Step 2: Convert to fraction form
    1,916.90/2,644.97 = 1,171.05/x
  3. Step 3: Cross multiply
    1,916.90x = 2,644.97 × 1,171.05
  4. Step 4: Simplify right side
    1,916.90x = 3,097,392.12
  5. Step 5: Solve for x
    x = 3,097,392.12/1,916.90
  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.