Home / 3,772.62-5,208.81-2,886.87

Finding the Fourth Proportional to 3,772.62, 5,208.81 and 2,886.87

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Solution

The fourth proportional to 3,772.62, 5,208.81 and 2,886.87 is: 3,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.62 : 5,208.81 = 2,886.87 : x
  2. Step 2: Convert to fraction form
    3,772.62/5,208.81 = 2,886.87/x
  3. Step 3: Cross multiply
    3,772.62x = 5,208.81 × 2,886.87
  4. Step 4: Simplify right side
    3,772.62x = 15,037,157.32
  5. Step 5: Solve for x
    x = 15,037,157.32/3,772.62
  6. Step 6: Final answer
    x = 3,985.87

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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.