Home / 1,871.03-2,581.39-1,208.32

Finding the Fourth Proportional to 1,871.03, 2,581.39 and 1,208.32

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Solution

The fourth proportional to 1,871.03, 2,581.39 and 1,208.32 is: 1,667.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.03 : 2,581.39 = 1,208.32 : x
  2. Step 2: Convert to fraction form
    1,871.03/2,581.39 = 1,208.32/x
  3. Step 3: Cross multiply
    1,871.03x = 2,581.39 × 1,208.32
  4. Step 4: Simplify right side
    1,871.03x = 3,119,145.16
  5. Step 5: Solve for x
    x = 3,119,145.16/1,871.03
  6. Step 6: Final answer
    x = 1,667.07

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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.