Home / 3,750.42-5,175.45-2,178.30

Finding the Fourth Proportional to 3,750.42, 5,175.45 and 2,178.30

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Solution

The fourth proportional to 3,750.42, 5,175.45 and 2,178.30 is: 3,005.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.42 : 5,175.45 = 2,178.30 : x
  2. Step 2: Convert to fraction form
    3,750.42/5,175.45 = 2,178.30/x
  3. Step 3: Cross multiply
    3,750.42x = 5,175.45 × 2,178.30
  4. Step 4: Simplify right side
    3,750.42x = 11,273,682.74
  5. Step 5: Solve for x
    x = 11,273,682.74/3,750.42
  6. Step 6: Final answer
    x = 3,005.98

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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.