Home / 6,287.60-8,676.86-3,455.15

Finding the Fourth Proportional to 6,287.60, 8,676.86 and 3,455.15

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Solution

The fourth proportional to 6,287.60, 8,676.86 and 3,455.15 is: 4,768.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.60 : 8,676.86 = 3,455.15 : x
  2. Step 2: Convert to fraction form
    6,287.60/8,676.86 = 3,455.15/x
  3. Step 3: Cross multiply
    6,287.60x = 8,676.86 × 3,455.15
  4. Step 4: Simplify right side
    6,287.60x = 29,979,883.16
  5. Step 5: Solve for x
    x = 29,979,883.16/6,287.60
  6. Step 6: Final answer
    x = 4,768.09

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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.