Home / 3,872.10-5,341.50-2,453.40

Finding the Fourth Proportional to 3,872.10, 5,341.50 and 2,453.40

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Solution

The fourth proportional to 3,872.10, 5,341.50 and 2,453.40 is: 3,384.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.10 : 5,341.50 = 2,453.40 : x
  2. Step 2: Convert to fraction form
    3,872.10/5,341.50 = 2,453.40/x
  3. Step 3: Cross multiply
    3,872.10x = 5,341.50 × 2,453.40
  4. Step 4: Simplify right side
    3,872.10x = 13,104,836.10
  5. Step 5: Solve for x
    x = 13,104,836.10/3,872.10
  6. Step 6: Final answer
    x = 3,384.43

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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.