Home / 3,752.76-5,178.80-2,181.76

Finding the Fourth Proportional to 3,752.76, 5,178.80 and 2,181.76

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Solution

The fourth proportional to 3,752.76, 5,178.80 and 2,181.76 is: 3,010.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,752.76 : 5,178.80 = 2,181.76 : x
  2. Step 2: Convert to fraction form
    3,752.76/5,178.80 = 2,181.76/x
  3. Step 3: Cross multiply
    3,752.76x = 5,178.80 × 2,181.76
  4. Step 4: Simplify right side
    3,752.76x = 11,298,898.69
  5. Step 5: Solve for x
    x = 11,298,898.69/3,752.76
  6. Step 6: Final answer
    x = 3,010.82

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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.