Home / 1,679.28-2,318.31-1,148.94

Finding the Fourth Proportional to 1,679.28, 2,318.31 and 1,148.94

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Solution

The fourth proportional to 1,679.28, 2,318.31 and 1,148.94 is: 1,586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.28 : 2,318.31 = 1,148.94 : x
  2. Step 2: Convert to fraction form
    1,679.28/2,318.31 = 1,148.94/x
  3. Step 3: Cross multiply
    1,679.28x = 2,318.31 × 1,148.94
  4. Step 4: Simplify right side
    1,679.28x = 2,663,599.09
  5. Step 5: Solve for x
    x = 2,663,599.09/1,679.28
  6. Step 6: Final answer
    x = 1,586.16

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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.