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Finding the Fourth Proportional to 5,814.72, 8,721.33 and 1,865.67

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Solution

The fourth proportional to 5,814.72, 8,721.33 and 1,865.67 is: 2,798.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,814.72 : 8,721.33 = 1,865.67 : x
  2. Step 2: Convert to fraction form
    5,814.72/8,721.33 = 1,865.67/x
  3. Step 3: Cross multiply
    5,814.72x = 8,721.33 × 1,865.67
  4. Step 4: Simplify right side
    5,814.72x = 16,271,123.74
  5. Step 5: Solve for x
    x = 16,271,123.74/5,814.72
  6. Step 6: Final answer
    x = 2,798.26

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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.