Home / 7,639.84-11,451.66-4,857.76

Finding the Fourth Proportional to 7,639.84, 11,451.66 and 4,857.76

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Solution

The fourth proportional to 7,639.84, 11,451.66 and 4,857.76 is: 7,281.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.84 : 11,451.66 = 4,857.76 : x
  2. Step 2: Convert to fraction form
    7,639.84/11,451.66 = 4,857.76/x
  3. Step 3: Cross multiply
    7,639.84x = 11,451.66 × 4,857.76
  4. Step 4: Simplify right side
    7,639.84x = 55,629,415.88
  5. Step 5: Solve for x
    x = 55,629,415.88/7,639.84
  6. Step 6: Final answer
    x = 7,281.49

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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.