Home / 1,492.36-2,238.56-979.24

Finding the Fourth Proportional to 1,492.36, 2,238.56 and 979.24

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Solution

The fourth proportional to 1,492.36, 2,238.56 and 979.24 is: 1,468.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.36 : 2,238.56 = 979.24 : x
  2. Step 2: Convert to fraction form
    1,492.36/2,238.56 = 979.24/x
  3. Step 3: Cross multiply
    1,492.36x = 2,238.56 × 979.24
  4. Step 4: Simplify right side
    1,492.36x = 2,192,087.49
  5. Step 5: Solve for x
    x = 2,192,087.49/1,492.36
  6. Step 6: Final answer
    x = 1,468.87

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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.