Home / 5,078.49-7,617.74-2,857.47

Finding the Fourth Proportional to 5,078.49, 7,617.74 and 2,857.47

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Solution

The fourth proportional to 5,078.49, 7,617.74 and 2,857.47 is: 4,286.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.49 : 7,617.74 = 2,857.47 : x
  2. Step 2: Convert to fraction form
    5,078.49/7,617.74 = 2,857.47/x
  3. Step 3: Cross multiply
    5,078.49x = 7,617.74 × 2,857.47
  4. Step 4: Simplify right side
    5,078.49x = 21,767,449.23
  5. Step 5: Solve for x
    x = 21,767,449.23/5,078.49
  6. Step 6: Final answer
    x = 4,286.21

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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.