Home / 2,719.69-3,749.04-2,129.20

Finding the Fourth Proportional to 2,719.69, 3,749.04 and 2,129.20

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Solution

The fourth proportional to 2,719.69, 3,749.04 and 2,129.20 is: 2,935.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.69 : 3,749.04 = 2,129.20 : x
  2. Step 2: Convert to fraction form
    2,719.69/3,749.04 = 2,129.20/x
  3. Step 3: Cross multiply
    2,719.69x = 3,749.04 × 2,129.20
  4. Step 4: Simplify right side
    2,719.69x = 7,982,455.97
  5. Step 5: Solve for x
    x = 7,982,455.97/2,719.69
  6. Step 6: Final answer
    x = 2,935.06

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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.