Home / 4,759.78-7,138.08-1,639.70

Finding the Fourth Proportional to 4,759.78, 7,138.08 and 1,639.70

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Solution

The fourth proportional to 4,759.78, 7,138.08 and 1,639.70 is: 2,459.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,759.78 : 7,138.08 = 1,639.70 : x
  2. Step 2: Convert to fraction form
    4,759.78/7,138.08 = 1,639.70/x
  3. Step 3: Cross multiply
    4,759.78x = 7,138.08 × 1,639.70
  4. Step 4: Simplify right side
    4,759.78x = 11,704,309.78
  5. Step 5: Solve for x
    x = 11,704,309.78/4,759.78
  6. Step 6: Final answer
    x = 2,459.00

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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.