Home / 3,785.58-5,676.48-1,319.76

Finding the Fourth Proportional to 3,785.58, 5,676.48 and 1,319.76

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Solution

The fourth proportional to 3,785.58, 5,676.48 and 1,319.76 is: 1,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.58 : 5,676.48 = 1,319.76 : x
  2. Step 2: Convert to fraction form
    3,785.58/5,676.48 = 1,319.76/x
  3. Step 3: Cross multiply
    3,785.58x = 5,676.48 × 1,319.76
  4. Step 4: Simplify right side
    3,785.58x = 7,491,591.24
  5. Step 5: Solve for x
    x = 7,491,591.24/3,785.58
  6. Step 6: Final answer
    x = 1,978.98

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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.