Home / 7,989.12-11,023.92-4,451.76

Finding the Fourth Proportional to 7,989.12, 11,023.92 and 4,451.76

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Solution

The fourth proportional to 7,989.12, 11,023.92 and 4,451.76 is: 6,142.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.12 : 11,023.92 = 4,451.76 : x
  2. Step 2: Convert to fraction form
    7,989.12/11,023.92 = 4,451.76/x
  3. Step 3: Cross multiply
    7,989.12x = 11,023.92 × 4,451.76
  4. Step 4: Simplify right side
    7,989.12x = 49,075,846.10
  5. Step 5: Solve for x
    x = 49,075,846.10/7,989.12
  6. Step 6: Final answer
    x = 6,142.84

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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.