Home / 7,853.21-11,778.60-7,419.46

Finding the Fourth Proportional to 7,853.21, 11,778.60 and 7,419.46

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Solution

The fourth proportional to 7,853.21, 11,778.60 and 7,419.46 is: 11,128.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,853.21 : 11,778.60 = 7,419.46 : x
  2. Step 2: Convert to fraction form
    7,853.21/11,778.60 = 7,419.46/x
  3. Step 3: Cross multiply
    7,853.21x = 11,778.60 × 7,419.46
  4. Step 4: Simplify right side
    7,853.21x = 87,390,851.56
  5. Step 5: Solve for x
    x = 87,390,851.56/7,853.21
  6. Step 6: Final answer
    x = 11,128.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.