Home / 3,750.12-5,175.16-2,156.88

Finding the Fourth Proportional to 3,750.12, 5,175.16 and 2,156.88

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Solution

The fourth proportional to 3,750.12, 5,175.16 and 2,156.88 is: 2,976.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.12 : 5,175.16 = 2,156.88 : x
  2. Step 2: Convert to fraction form
    3,750.12/5,175.16 = 2,156.88/x
  3. Step 3: Cross multiply
    3,750.12x = 5,175.16 × 2,156.88
  4. Step 4: Simplify right side
    3,750.12x = 11,162,199.10
  5. Step 5: Solve for x
    x = 11,162,199.10/3,750.12
  6. Step 6: Final answer
    x = 2,976.49

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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.