Home / 5,814.30-8,721.48-1,431.72

Finding the Fourth Proportional to 5,814.30, 8,721.48 and 1,431.72

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Solution

The fourth proportional to 5,814.30, 8,721.48 and 1,431.72 is: 2,147.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,814.30 : 8,721.48 = 1,431.72 : x
  2. Step 2: Convert to fraction form
    5,814.30/8,721.48 = 1,431.72/x
  3. Step 3: Cross multiply
    5,814.30x = 8,721.48 × 1,431.72
  4. Step 4: Simplify right side
    5,814.30x = 12,486,710.19
  5. Step 5: Solve for x
    x = 12,486,710.19/5,814.30
  6. Step 6: Final answer
    x = 2,147.59

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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.