Home / 8,515.28-11,748.48-5,160.08

Finding the Fourth Proportional to 8,515.28, 11,748.48 and 5,160.08

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Solution

The fourth proportional to 8,515.28, 11,748.48 and 5,160.08 is: 7,119.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.28 : 11,748.48 = 5,160.08 : x
  2. Step 2: Convert to fraction form
    8,515.28/11,748.48 = 5,160.08/x
  3. Step 3: Cross multiply
    8,515.28x = 11,748.48 × 5,160.08
  4. Step 4: Simplify right side
    8,515.28x = 60,623,096.68
  5. Step 5: Solve for x
    x = 60,623,096.68/8,515.28
  6. Step 6: Final answer
    x = 7,119.33

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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.