Home / 3,108.40-4,289.83-1,782.02

Finding the Fourth Proportional to 3,108.40, 4,289.83 and 1,782.02

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Solution

The fourth proportional to 3,108.40, 4,289.83 and 1,782.02 is: 2,459.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.40 : 4,289.83 = 1,782.02 : x
  2. Step 2: Convert to fraction form
    3,108.40/4,289.83 = 1,782.02/x
  3. Step 3: Cross multiply
    3,108.40x = 4,289.83 × 1,782.02
  4. Step 4: Simplify right side
    3,108.40x = 7,644,569.13
  5. Step 5: Solve for x
    x = 7,644,569.13/3,108.40
  6. Step 6: Final answer
    x = 2,459.33

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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.