Home / 3,688.31-5,090.09-2,116.51

Finding the Fourth Proportional to 3,688.31, 5,090.09 and 2,116.51

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Solution

The fourth proportional to 3,688.31, 5,090.09 and 2,116.51 is: 2,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.31 : 5,090.09 = 2,116.51 : x
  2. Step 2: Convert to fraction form
    3,688.31/5,090.09 = 2,116.51/x
  3. Step 3: Cross multiply
    3,688.31x = 5,090.09 × 2,116.51
  4. Step 4: Simplify right side
    3,688.31x = 10,773,203.08
  5. Step 5: Solve for x
    x = 10,773,203.08/3,688.31
  6. Step 6: Final answer
    x = 2,920.90

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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.