Home / 1,814.69-2,720.72-581.40

Finding the Fourth Proportional to 1,814.69, 2,720.72 and 581.40

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Solution

The fourth proportional to 1,814.69, 2,720.72 and 581.40 is: 871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.69 : 2,720.72 = 581.40 : x
  2. Step 2: Convert to fraction form
    1,814.69/2,720.72 = 581.40/x
  3. Step 3: Cross multiply
    1,814.69x = 2,720.72 × 581.40
  4. Step 4: Simplify right side
    1,814.69x = 1,581,823.70
  5. Step 5: Solve for x
    x = 1,581,823.70/1,814.69
  6. Step 6: Final answer
    x = 871.68

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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.