Home / 3,881.51-5,356.45-2,113.11

Finding the Fourth Proportional to 3,881.51, 5,356.45 and 2,113.11

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Solution

The fourth proportional to 3,881.51, 5,356.45 and 2,113.11 is: 2,916.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.51 : 5,356.45 = 2,113.11 : x
  2. Step 2: Convert to fraction form
    3,881.51/5,356.45 = 2,113.11/x
  3. Step 3: Cross multiply
    3,881.51x = 5,356.45 × 2,113.11
  4. Step 4: Simplify right side
    3,881.51x = 11,318,757.49
  5. Step 5: Solve for x
    x = 11,318,757.49/3,881.51
  6. Step 6: Final answer
    x = 2,916.07

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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.