Home / 5,206.40-7,810.10-2,739.68

Finding the Fourth Proportional to 5,206.40, 7,810.10 and 2,739.68

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Solution

The fourth proportional to 5,206.40, 7,810.10 and 2,739.68 is: 4,109.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,206.40 : 7,810.10 = 2,739.68 : x
  2. Step 2: Convert to fraction form
    5,206.40/7,810.10 = 2,739.68/x
  3. Step 3: Cross multiply
    5,206.40x = 7,810.10 × 2,739.68
  4. Step 4: Simplify right side
    5,206.40x = 21,397,174.77
  5. Step 5: Solve for x
    x = 21,397,174.77/5,206.40
  6. Step 6: Final answer
    x = 4,109.78

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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.