Home / 7,728.08-11,589.28-2,796.40

Finding the Fourth Proportional to 7,728.08, 11,589.28 and 2,796.40

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Solution

The fourth proportional to 7,728.08, 11,589.28 and 2,796.40 is: 4,193.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.08 : 11,589.28 = 2,796.40 : x
  2. Step 2: Convert to fraction form
    7,728.08/11,589.28 = 2,796.40/x
  3. Step 3: Cross multiply
    7,728.08x = 11,589.28 × 2,796.40
  4. Step 4: Simplify right side
    7,728.08x = 32,408,237.49
  5. Step 5: Solve for x
    x = 32,408,237.49/7,728.08
  6. Step 6: Final answer
    x = 4,193.57

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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.