Home / 4,759.86-7,140.78-1,639.74

Finding the Fourth Proportional to 4,759.86, 7,140.78 and 1,639.74

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Solution

The fourth proportional to 4,759.86, 7,140.78 and 1,639.74 is: 2,459.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,759.86 : 7,140.78 = 1,639.74 : x
  2. Step 2: Convert to fraction form
    4,759.86/7,140.78 = 1,639.74/x
  3. Step 3: Cross multiply
    4,759.86x = 7,140.78 × 1,639.74
  4. Step 4: Simplify right side
    4,759.86x = 11,709,022.60
  5. Step 5: Solve for x
    x = 11,709,022.60/4,759.86
  6. Step 6: Final answer
    x = 2,459.95

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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.