Home / 3,607.90-4,977.07-2,191.21

Finding the Fourth Proportional to 3,607.90, 4,977.07 and 2,191.21

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Solution

The fourth proportional to 3,607.90, 4,977.07 and 2,191.21 is: 3,022.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.90 : 4,977.07 = 2,191.21 : x
  2. Step 2: Convert to fraction form
    3,607.90/4,977.07 = 2,191.21/x
  3. Step 3: Cross multiply
    3,607.90x = 4,977.07 × 2,191.21
  4. Step 4: Simplify right side
    3,607.90x = 10,905,810.41
  5. Step 5: Solve for x
    x = 10,905,810.41/3,607.90
  6. Step 6: Final answer
    x = 3,022.76

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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.