Home / 1,814.08-2,720.40-719.68

Finding the Fourth Proportional to 1,814.08, 2,720.40 and 719.68

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Solution

The fourth proportional to 1,814.08, 2,720.40 and 719.68 is: 1,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.08 : 2,720.40 = 719.68 : x
  2. Step 2: Convert to fraction form
    1,814.08/2,720.40 = 719.68/x
  3. Step 3: Cross multiply
    1,814.08x = 2,720.40 × 719.68
  4. Step 4: Simplify right side
    1,814.08x = 1,957,817.47
  5. Step 5: Solve for x
    x = 1,957,817.47/1,814.08
  6. Step 6: Final answer
    x = 1,079.23

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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.