Home / 8,658.12-12,983.61-3,320.48

Finding the Fourth Proportional to 8,658.12, 12,983.61 and 3,320.48

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Solution

The fourth proportional to 8,658.12, 12,983.61 and 3,320.48 is: 4,979.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.12 : 12,983.61 = 3,320.48 : x
  2. Step 2: Convert to fraction form
    8,658.12/12,983.61 = 3,320.48/x
  3. Step 3: Cross multiply
    8,658.12x = 12,983.61 × 3,320.48
  4. Step 4: Simplify right side
    8,658.12x = 43,111,752.41
  5. Step 5: Solve for x
    x = 43,111,752.41/8,658.12
  6. Step 6: Final answer
    x = 4,979.34

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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.