Home / 3,881.96-5,356.95-2,113.57

Finding the Fourth Proportional to 3,881.96, 5,356.95 and 2,113.57

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Solution

The fourth proportional to 3,881.96, 5,356.95 and 2,113.57 is: 2,916.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.96 : 5,356.95 = 2,113.57 : x
  2. Step 2: Convert to fraction form
    3,881.96/5,356.95 = 2,113.57/x
  3. Step 3: Cross multiply
    3,881.96x = 5,356.95 × 2,113.57
  4. Step 4: Simplify right side
    3,881.96x = 11,322,288.81
  5. Step 5: Solve for x
    x = 11,322,288.81/3,881.96
  6. Step 6: Final answer
    x = 2,916.64

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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.