Home / 2,678.10-3,693.11-1,629.51

Finding the Fourth Proportional to 2,678.10, 3,693.11 and 1,629.51

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Solution

The fourth proportional to 2,678.10, 3,693.11 and 1,629.51 is: 2,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.10 : 3,693.11 = 1,629.51 : x
  2. Step 2: Convert to fraction form
    2,678.10/3,693.11 = 1,629.51/x
  3. Step 3: Cross multiply
    2,678.10x = 3,693.11 × 1,629.51
  4. Step 4: Simplify right side
    2,678.10x = 6,017,959.68
  5. Step 5: Solve for x
    x = 6,017,959.68/2,678.10
  6. Step 6: Final answer
    x = 2,247.10

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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.