Home / 8,117.20-11,208.36-5,137.84

Finding the Fourth Proportional to 8,117.20, 11,208.36 and 5,137.84

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Solution

The fourth proportional to 8,117.20, 11,208.36 and 5,137.84 is: 7,094.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.20 : 11,208.36 = 5,137.84 : x
  2. Step 2: Convert to fraction form
    8,117.20/11,208.36 = 5,137.84/x
  3. Step 3: Cross multiply
    8,117.20x = 11,208.36 × 5,137.84
  4. Step 4: Simplify right side
    8,117.20x = 57,586,760.34
  5. Step 5: Solve for x
    x = 57,586,760.34/8,117.20
  6. Step 6: Final answer
    x = 7,094.41

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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.