Home / 3,881.91-5,357.04-2,113.51

Finding the Fourth Proportional to 3,881.91, 5,357.04 and 2,113.51

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Solution

The fourth proportional to 3,881.91, 5,357.04 and 2,113.51 is: 2,916.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.91 : 5,357.04 = 2,113.51 : x
  2. Step 2: Convert to fraction form
    3,881.91/5,357.04 = 2,113.51/x
  3. Step 3: Cross multiply
    3,881.91x = 5,357.04 × 2,113.51
  4. Step 4: Simplify right side
    3,881.91x = 11,322,157.61
  5. Step 5: Solve for x
    x = 11,322,157.61/3,881.91
  6. Step 6: Final answer
    x = 2,916.65

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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.