Home / 4,579.12-6,869.80-2,115.64

Finding the Fourth Proportional to 4,579.12, 6,869.80 and 2,115.64

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Solution

The fourth proportional to 4,579.12, 6,869.80 and 2,115.64 is: 3,173.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,579.12 : 6,869.80 = 2,115.64 : x
  2. Step 2: Convert to fraction form
    4,579.12/6,869.80 = 2,115.64/x
  3. Step 3: Cross multiply
    4,579.12x = 6,869.80 × 2,115.64
  4. Step 4: Simplify right side
    4,579.12x = 14,534,023.67
  5. Step 5: Solve for x
    x = 14,534,023.67/4,579.12
  6. Step 6: Final answer
    x = 3,173.98

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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.