Home / 5,411.80-8,121.30-3,071.80

Finding the Fourth Proportional to 5,411.80, 8,121.30 and 3,071.80

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Solution

The fourth proportional to 5,411.80, 8,121.30 and 3,071.80 is: 4,609.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.80 : 8,121.30 = 3,071.80 : x
  2. Step 2: Convert to fraction form
    5,411.80/8,121.30 = 3,071.80/x
  3. Step 3: Cross multiply
    5,411.80x = 8,121.30 × 3,071.80
  4. Step 4: Simplify right side
    5,411.80x = 24,947,009.34
  5. Step 5: Solve for x
    x = 24,947,009.34/5,411.80
  6. Step 6: Final answer
    x = 4,609.74

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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.