Home / 1,871.24-2,581.76-1,208.32

Finding the Fourth Proportional to 1,871.24, 2,581.76 and 1,208.32

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Solution

The fourth proportional to 1,871.24, 2,581.76 and 1,208.32 is: 1,667.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.24 : 2,581.76 = 1,208.32 : x
  2. Step 2: Convert to fraction form
    1,871.24/2,581.76 = 1,208.32/x
  3. Step 3: Cross multiply
    1,871.24x = 2,581.76 × 1,208.32
  4. Step 4: Simplify right side
    1,871.24x = 3,119,592.24
  5. Step 5: Solve for x
    x = 3,119,592.24/1,871.24
  6. Step 6: Final answer
    x = 1,667.13

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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.