Home / 3,134.20-4,703.10-1,187.80

Finding the Fourth Proportional to 3,134.20, 4,703.10 and 1,187.80

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Solution

The fourth proportional to 3,134.20, 4,703.10 and 1,187.80 is: 1,782.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,134.20 : 4,703.10 = 1,187.80 : x
  2. Step 2: Convert to fraction form
    3,134.20/4,703.10 = 1,187.80/x
  3. Step 3: Cross multiply
    3,134.20x = 4,703.10 × 1,187.80
  4. Step 4: Simplify right side
    3,134.20x = 5,586,342.18
  5. Step 5: Solve for x
    x = 5,586,342.18/3,134.20
  6. Step 6: Final answer
    x = 1,782.38

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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.