Home / 4,639.68-6,400.08-2,775.60

Finding the Fourth Proportional to 4,639.68, 6,400.08 and 2,775.60

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Solution

The fourth proportional to 4,639.68, 6,400.08 and 2,775.60 is: 3,828.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.68 : 6,400.08 = 2,775.60 : x
  2. Step 2: Convert to fraction form
    4,639.68/6,400.08 = 2,775.60/x
  3. Step 3: Cross multiply
    4,639.68x = 6,400.08 × 2,775.60
  4. Step 4: Simplify right side
    4,639.68x = 17,764,062.05
  5. Step 5: Solve for x
    x = 17,764,062.05/4,639.68
  6. Step 6: Final answer
    x = 3,828.73

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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.