Home / 3,072.56-4,238.85-1,813.11

Finding the Fourth Proportional to 3,072.56, 4,238.85 and 1,813.11

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Solution

The fourth proportional to 3,072.56, 4,238.85 and 1,813.11 is: 2,501.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.56 : 4,238.85 = 1,813.11 : x
  2. Step 2: Convert to fraction form
    3,072.56/4,238.85 = 1,813.11/x
  3. Step 3: Cross multiply
    3,072.56x = 4,238.85 × 1,813.11
  4. Step 4: Simplify right side
    3,072.56x = 7,685,501.32
  5. Step 5: Solve for x
    x = 7,685,501.32/3,072.56
  6. Step 6: Final answer
    x = 2,501.34

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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.