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Finding the Fourth Proportional to 2,696.25, 3,720.92 and 1,648.11

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Solution

The fourth proportional to 2,696.25, 3,720.92 and 1,648.11 is: 2,274.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,696.25 : 3,720.92 = 1,648.11 : x
  2. Step 2: Convert to fraction form
    2,696.25/3,720.92 = 1,648.11/x
  3. Step 3: Cross multiply
    2,696.25x = 3,720.92 × 1,648.11
  4. Step 4: Simplify right side
    2,696.25x = 6,132,477.22
  5. Step 5: Solve for x
    x = 6,132,477.22/2,696.25
  6. Step 6: Final answer
    x = 2,274.45

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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.