Home / 8,486.19-11,709.11-5,128.34

Finding the Fourth Proportional to 8,486.19, 11,709.11 and 5,128.34

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Solution

The fourth proportional to 8,486.19, 11,709.11 and 5,128.34 is: 7,076.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.19 : 11,709.11 = 5,128.34 : x
  2. Step 2: Convert to fraction form
    8,486.19/11,709.11 = 5,128.34/x
  3. Step 3: Cross multiply
    8,486.19x = 11,709.11 × 5,128.34
  4. Step 4: Simplify right side
    8,486.19x = 60,048,329.63
  5. Step 5: Solve for x
    x = 60,048,329.63/8,486.19
  6. Step 6: Final answer
    x = 7,076.01

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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.