Home / 3,405.48-5,108.68-1,214.80

Finding the Fourth Proportional to 3,405.48, 5,108.68 and 1,214.80

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Solution

The fourth proportional to 3,405.48, 5,108.68 and 1,214.80 is: 1,822.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.48 : 5,108.68 = 1,214.80 : x
  2. Step 2: Convert to fraction form
    3,405.48/5,108.68 = 1,214.80/x
  3. Step 3: Cross multiply
    3,405.48x = 5,108.68 × 1,214.80
  4. Step 4: Simplify right side
    3,405.48x = 6,206,024.46
  5. Step 5: Solve for x
    x = 6,206,024.46/3,405.48
  6. Step 6: Final answer
    x = 1,822.36

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1.5x scale

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.