Home / 8,579.20-12,866.72-3,312.48

Finding the Fourth Proportional to 8,579.20, 12,866.72 and 3,312.48

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Solution

The fourth proportional to 8,579.20, 12,866.72 and 3,312.48 is: 4,967.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.20 : 12,866.72 = 3,312.48 : x
  2. Step 2: Convert to fraction form
    8,579.20/12,866.72 = 3,312.48/x
  3. Step 3: Cross multiply
    8,579.20x = 12,866.72 × 3,312.48
  4. Step 4: Simplify right side
    8,579.20x = 42,620,752.67
  5. Step 5: Solve for x
    x = 42,620,752.67/8,579.20
  6. Step 6: Final answer
    x = 4,967.92

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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.