Home / 5,185.53-7,155.81-2,827.68

Finding the Fourth Proportional to 5,185.53, 7,155.81 and 2,827.68

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Solution

The fourth proportional to 5,185.53, 7,155.81 and 2,827.68 is: 3,902.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.53 : 7,155.81 = 2,827.68 : x
  2. Step 2: Convert to fraction form
    5,185.53/7,155.81 = 2,827.68/x
  3. Step 3: Cross multiply
    5,185.53x = 7,155.81 × 2,827.68
  4. Step 4: Simplify right side
    5,185.53x = 20,234,340.82
  5. Step 5: Solve for x
    x = 20,234,340.82/5,185.53
  6. Step 6: Final answer
    x = 3,902.08

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1.5x scale

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.