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Finding the Fourth Proportional to 2,113.76, 2,917.07 and 1,182.26

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Solution

The fourth proportional to 2,113.76, 2,917.07 and 1,182.26 is: 1,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.76 : 2,917.07 = 1,182.26 : x
  2. Step 2: Convert to fraction form
    2,113.76/2,917.07 = 1,182.26/x
  3. Step 3: Cross multiply
    2,113.76x = 2,917.07 × 1,182.26
  4. Step 4: Simplify right side
    2,113.76x = 3,448,735.18
  5. Step 5: Solve for x
    x = 3,448,735.18/2,113.76
  6. Step 6: Final answer
    x = 1,631.56

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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.