Home / 8,911.94-12,299.39-5,135.25

Finding the Fourth Proportional to 8,911.94, 12,299.39 and 5,135.25

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Solution

The fourth proportional to 8,911.94, 12,299.39 and 5,135.25 is: 7,087.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.94 : 12,299.39 = 5,135.25 : x
  2. Step 2: Convert to fraction form
    8,911.94/12,299.39 = 5,135.25/x
  3. Step 3: Cross multiply
    8,911.94x = 12,299.39 × 5,135.25
  4. Step 4: Simplify right side
    8,911.94x = 63,160,442.50
  5. Step 5: Solve for x
    x = 63,160,442.50/8,911.94
  6. Step 6: Final answer
    x = 7,087.17

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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.