Home / 8,998.40-12,423.58-5,645.82

Finding the Fourth Proportional to 8,998.40, 12,423.58 and 5,645.82

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Solution

The fourth proportional to 8,998.40, 12,423.58 and 5,645.82 is: 7,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.40 : 12,423.58 = 5,645.82 : x
  2. Step 2: Convert to fraction form
    8,998.40/12,423.58 = 5,645.82/x
  3. Step 3: Cross multiply
    8,998.40x = 12,423.58 × 5,645.82
  4. Step 4: Simplify right side
    8,998.40x = 70,141,296.44
  5. Step 5: Solve for x
    x = 70,141,296.44/8,998.40
  6. Step 6: Final answer
    x = 7,794.86

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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.