Home / 7,090.79-10,638.47-2,161.38

Finding the Fourth Proportional to 7,090.79, 10,638.47 and 2,161.38

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Solution

The fourth proportional to 7,090.79, 10,638.47 and 2,161.38 is: 3,242.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.79 : 10,638.47 = 2,161.38 : x
  2. Step 2: Convert to fraction form
    7,090.79/10,638.47 = 2,161.38/x
  3. Step 3: Cross multiply
    7,090.79x = 10,638.47 × 2,161.38
  4. Step 4: Simplify right side
    7,090.79x = 22,993,776.29
  5. Step 5: Solve for x
    x = 22,993,776.29/7,090.79
  6. Step 6: Final answer
    x = 3,242.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.