Home / 1,492.20-2,238.30-943.63

Finding the Fourth Proportional to 1,492.20, 2,238.30 and 943.63

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Solution

The fourth proportional to 1,492.20, 2,238.30 and 943.63 is: 1,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.20 : 2,238.30 = 943.63 : x
  2. Step 2: Convert to fraction form
    1,492.20/2,238.30 = 943.63/x
  3. Step 3: Cross multiply
    1,492.20x = 2,238.30 × 943.63
  4. Step 4: Simplify right side
    1,492.20x = 2,112,121.43
  5. Step 5: Solve for x
    x = 2,112,121.43/1,492.20
  6. Step 6: Final answer
    x = 1,415.44

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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.