Home / 3,835.40-5,292.78-2,418.80

Finding the Fourth Proportional to 3,835.40, 5,292.78 and 2,418.80

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Solution

The fourth proportional to 3,835.40, 5,292.78 and 2,418.80 is: 3,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,835.40 : 5,292.78 = 2,418.80 : x
  2. Step 2: Convert to fraction form
    3,835.40/5,292.78 = 2,418.80/x
  3. Step 3: Cross multiply
    3,835.40x = 5,292.78 × 2,418.80
  4. Step 4: Simplify right side
    3,835.40x = 12,802,176.26
  5. Step 5: Solve for x
    x = 12,802,176.26/3,835.40
  6. Step 6: Final answer
    x = 3,337.90

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1.5x scale

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.