Home / 5,780.20-8,660.70-5,434.60

Finding the Fourth Proportional to 5,780.20, 8,660.70 and 5,434.60

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Solution

The fourth proportional to 5,780.20, 8,660.70 and 5,434.60 is: 8,142.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.20 : 8,660.70 = 5,434.60 : x
  2. Step 2: Convert to fraction form
    5,780.20/8,660.70 = 5,434.60/x
  3. Step 3: Cross multiply
    5,780.20x = 8,660.70 × 5,434.60
  4. Step 4: Simplify right side
    5,780.20x = 47,067,440.22
  5. Step 5: Solve for x
    x = 47,067,440.22/5,780.20
  6. Step 6: Final answer
    x = 8,142.87

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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.