Home / 1,399.52-2,099.36-1,315.04

Finding the Fourth Proportional to 1,399.52, 2,099.36 and 1,315.04

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Solution

The fourth proportional to 1,399.52, 2,099.36 and 1,315.04 is: 1,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399.52 : 2,099.36 = 1,315.04 : x
  2. Step 2: Convert to fraction form
    1,399.52/2,099.36 = 1,315.04/x
  3. Step 3: Cross multiply
    1,399.52x = 2,099.36 × 1,315.04
  4. Step 4: Simplify right side
    1,399.52x = 2,760,742.37
  5. Step 5: Solve for x
    x = 2,760,742.37/1,399.52
  6. Step 6: Final answer
    x = 1,972.64

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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.