Home / 2,139.55-3,203.85-1,895.34

Finding the Fourth Proportional to 2,139.55, 3,203.85 and 1,895.34

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Solution

The fourth proportional to 2,139.55, 3,203.85 and 1,895.34 is: 2,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.55 : 3,203.85 = 1,895.34 : x
  2. Step 2: Convert to fraction form
    2,139.55/3,203.85 = 1,895.34/x
  3. Step 3: Cross multiply
    2,139.55x = 3,203.85 × 1,895.34
  4. Step 4: Simplify right side
    2,139.55x = 6,072,385.06
  5. Step 5: Solve for x
    x = 6,072,385.06/2,139.55
  6. Step 6: Final answer
    x = 2,838.16

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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.