Home / 8,855.36-12,221.20-4,877.28

Finding the Fourth Proportional to 8,855.36, 12,221.20 and 4,877.28

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Solution

The fourth proportional to 8,855.36, 12,221.20 and 4,877.28 is: 6,731.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.36 : 12,221.20 = 4,877.28 : x
  2. Step 2: Convert to fraction form
    8,855.36/12,221.20 = 4,877.28/x
  3. Step 3: Cross multiply
    8,855.36x = 12,221.20 × 4,877.28
  4. Step 4: Simplify right side
    8,855.36x = 59,606,214.34
  5. Step 5: Solve for x
    x = 59,606,214.34/8,855.36
  6. Step 6: Final answer
    x = 6,731.09

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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.