Home / 8,555.12-12,822.58-3,869.64

Finding the Fourth Proportional to 8,555.12, 12,822.58 and 3,869.64

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Solution

The fourth proportional to 8,555.12, 12,822.58 and 3,869.64 is: 5,799.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.12 : 12,822.58 = 3,869.64 : x
  2. Step 2: Convert to fraction form
    8,555.12/12,822.58 = 3,869.64/x
  3. Step 3: Cross multiply
    8,555.12x = 12,822.58 × 3,869.64
  4. Step 4: Simplify right side
    8,555.12x = 49,618,768.47
  5. Step 5: Solve for x
    x = 49,618,768.47/8,555.12
  6. Step 6: Final answer
    x = 5,799.89

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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.