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Finding the Fourth Proportional to 5,323.31, 7,979.98 and 1,810.91

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Solution

The fourth proportional to 5,323.31, 7,979.98 and 1,810.91 is: 2,714.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,323.31 : 7,979.98 = 1,810.91 : x
  2. Step 2: Convert to fraction form
    5,323.31/7,979.98 = 1,810.91/x
  3. Step 3: Cross multiply
    5,323.31x = 7,979.98 × 1,810.91
  4. Step 4: Simplify right side
    5,323.31x = 14,451,016.53
  5. Step 5: Solve for x
    x = 14,451,016.53/5,323.31
  6. Step 6: Final answer
    x = 2,714.67

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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.