Home / 1,814.88-2,722.38-1,113.72

Finding the Fourth Proportional to 1,814.88, 2,722.38 and 1,113.72

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Solution

The fourth proportional to 1,814.88, 2,722.38 and 1,113.72 is: 1,670.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.88 : 2,722.38 = 1,113.72 : x
  2. Step 2: Convert to fraction form
    1,814.88/2,722.38 = 1,113.72/x
  3. Step 3: Cross multiply
    1,814.88x = 2,722.38 × 1,113.72
  4. Step 4: Simplify right side
    1,814.88x = 3,031,969.05
  5. Step 5: Solve for x
    x = 3,031,969.05/1,814.88
  6. Step 6: Final answer
    x = 1,670.62

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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.