Home / 1,581.23-2,365.35-1,318.79

Finding the Fourth Proportional to 1,581.23, 2,365.35 and 1,318.79

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Solution

The fourth proportional to 1,581.23, 2,365.35 and 1,318.79 is: 1,972.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.23 : 2,365.35 = 1,318.79 : x
  2. Step 2: Convert to fraction form
    1,581.23/2,365.35 = 1,318.79/x
  3. Step 3: Cross multiply
    1,581.23x = 2,365.35 × 1,318.79
  4. Step 4: Simplify right side
    1,581.23x = 3,119,399.93
  5. Step 5: Solve for x
    x = 3,119,399.93/1,581.23
  6. Step 6: Final answer
    x = 1,972.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.