Home / 5,209.13-7,811.70-1,876.49

Finding the Fourth Proportional to 5,209.13, 7,811.70 and 1,876.49

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Solution

The fourth proportional to 5,209.13, 7,811.70 and 1,876.49 is: 2,814.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.13 : 7,811.70 = 1,876.49 : x
  2. Step 2: Convert to fraction form
    5,209.13/7,811.70 = 1,876.49/x
  3. Step 3: Cross multiply
    5,209.13x = 7,811.70 × 1,876.49
  4. Step 4: Simplify right side
    5,209.13x = 14,658,576.93
  5. Step 5: Solve for x
    x = 14,658,576.93/5,209.13
  6. Step 6: Final answer
    x = 2,814.02

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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.