Home / 1,814.24-2,719.68-718.40

Finding the Fourth Proportional to 1,814.24, 2,719.68 and 718.40

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Solution

The fourth proportional to 1,814.24, 2,719.68 and 718.40 is: 1,076.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.24 : 2,719.68 = 718.40 : x
  2. Step 2: Convert to fraction form
    1,814.24/2,719.68 = 718.40/x
  3. Step 3: Cross multiply
    1,814.24x = 2,719.68 × 718.40
  4. Step 4: Simplify right side
    1,814.24x = 1,953,818.11
  5. Step 5: Solve for x
    x = 1,953,818.11/1,814.24
  6. Step 6: Final answer
    x = 1,076.93

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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.