Home / 5,708.40-8,562.60-2,785.20

Finding the Fourth Proportional to 5,708.40, 8,562.60 and 2,785.20

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Solution

The fourth proportional to 5,708.40, 8,562.60 and 2,785.20 is: 4,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,708.40 : 8,562.60 = 2,785.20 : x
  2. Step 2: Convert to fraction form
    5,708.40/8,562.60 = 2,785.20/x
  3. Step 3: Cross multiply
    5,708.40x = 8,562.60 × 2,785.20
  4. Step 4: Simplify right side
    5,708.40x = 23,848,553.52
  5. Step 5: Solve for x
    x = 23,848,553.52/5,708.40
  6. Step 6: Final answer
    x = 4,177.80

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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.