Home / 8,155.12-11,250.90-5,768.60

Finding the Fourth Proportional to 8,155.12, 11,250.90 and 5,768.60

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Solution

The fourth proportional to 8,155.12, 11,250.90 and 5,768.60 is: 7,958.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.12 : 11,250.90 = 5,768.60 : x
  2. Step 2: Convert to fraction form
    8,155.12/11,250.90 = 5,768.60/x
  3. Step 3: Cross multiply
    8,155.12x = 11,250.90 × 5,768.60
  4. Step 4: Simplify right side
    8,155.12x = 64,901,941.74
  5. Step 5: Solve for x
    x = 64,901,941.74/8,155.12
  6. Step 6: Final answer
    x = 7,958.43

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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.