Home / 3,885.60-5,829.34-1,288.80

Finding the Fourth Proportional to 3,885.60, 5,829.34 and 1,288.80

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Solution

The fourth proportional to 3,885.60, 5,829.34 and 1,288.80 is: 1,933.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.60 : 5,829.34 = 1,288.80 : x
  2. Step 2: Convert to fraction form
    3,885.60/5,829.34 = 1,288.80/x
  3. Step 3: Cross multiply
    3,885.60x = 5,829.34 × 1,288.80
  4. Step 4: Simplify right side
    3,885.60x = 7,512,853.39
  5. Step 5: Solve for x
    x = 7,512,853.39/3,885.60
  6. Step 6: Final answer
    x = 1,933.51

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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.