Home / 3,278.07-4,927.01-2,131.11

Finding the Fourth Proportional to 3,278.07, 4,927.01 and 2,131.11

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Solution

The fourth proportional to 3,278.07, 4,927.01 and 2,131.11 is: 3,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.07 : 4,927.01 = 2,131.11 : x
  2. Step 2: Convert to fraction form
    3,278.07/4,927.01 = 2,131.11/x
  3. Step 3: Cross multiply
    3,278.07x = 4,927.01 × 2,131.11
  4. Step 4: Simplify right side
    3,278.07x = 10,499,989.63
  5. Step 5: Solve for x
    x = 10,499,989.63/3,278.07
  6. Step 6: Final answer
    x = 3,203.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.