Home / 3,881.98-5,357.23-2,113.68

Finding the Fourth Proportional to 3,881.98, 5,357.23 and 2,113.68

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Solution

The fourth proportional to 3,881.98, 5,357.23 and 2,113.68 is: 2,916.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.98 : 5,357.23 = 2,113.68 : x
  2. Step 2: Convert to fraction form
    3,881.98/5,357.23 = 2,113.68/x
  3. Step 3: Cross multiply
    3,881.98x = 5,357.23 × 2,113.68
  4. Step 4: Simplify right side
    3,881.98x = 11,323,478.02
  5. Step 5: Solve for x
    x = 11,323,478.02/3,881.98
  6. Step 6: Final answer
    x = 2,916.93

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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.