Home / 8,428.66-11,631-5,070.85

Finding the Fourth Proportional to 8,428.66, 11,631 and 5,070.85

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Solution

The fourth proportional to 8,428.66, 11,631 and 5,070.85 is: 6,997.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.66 : 11,631 = 5,070.85 : x
  2. Step 2: Convert to fraction form
    8,428.66/11,631 = 5,070.85/x
  3. Step 3: Cross multiply
    8,428.66x = 11,631 × 5,070.85
  4. Step 4: Simplify right side
    8,428.66x = 58,979,056.35
  5. Step 5: Solve for x
    x = 58,979,056.35/8,428.66
  6. Step 6: Final answer
    x = 6,997.44

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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.