Home / 3,921.85-5,411.95-2,243.08

Finding the Fourth Proportional to 3,921.85, 5,411.95 and 2,243.08

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Solution

The fourth proportional to 3,921.85, 5,411.95 and 2,243.08 is: 3,095.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.85 : 5,411.95 = 2,243.08 : x
  2. Step 2: Convert to fraction form
    3,921.85/5,411.95 = 2,243.08/x
  3. Step 3: Cross multiply
    3,921.85x = 5,411.95 × 2,243.08
  4. Step 4: Simplify right side
    3,921.85x = 12,139,436.81
  5. Step 5: Solve for x
    x = 12,139,436.81/3,921.85
  6. Step 6: Final answer
    x = 3,095.33

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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.