Home / 7,917.75-11,877.84-5,742.90

Finding the Fourth Proportional to 7,917.75, 11,877.84 and 5,742.90

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Solution

The fourth proportional to 7,917.75, 11,877.84 and 5,742.90 is: 8,615.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.75 : 11,877.84 = 5,742.90 : x
  2. Step 2: Convert to fraction form
    7,917.75/11,877.84 = 5,742.90/x
  3. Step 3: Cross multiply
    7,917.75x = 11,877.84 × 5,742.90
  4. Step 4: Simplify right side
    7,917.75x = 68,213,247.34
  5. Step 5: Solve for x
    x = 68,213,247.34/7,917.75
  6. Step 6: Final answer
    x = 8,615.23

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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.