Home / 5,187.81-7,159.23-2,830

Finding the Fourth Proportional to 5,187.81, 7,159.23 and 2,830

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Solution

The fourth proportional to 5,187.81, 7,159.23 and 2,830 is: 3,905.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.81 : 7,159.23 = 2,830 : x
  2. Step 2: Convert to fraction form
    5,187.81/7,159.23 = 2,830/x
  3. Step 3: Cross multiply
    5,187.81x = 7,159.23 × 2,830
  4. Step 4: Simplify right side
    5,187.81x = 20,260,620.90
  5. Step 5: Solve for x
    x = 20,260,620.90/5,187.81
  6. Step 6: Final answer
    x = 3,905.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.