Home / 3,461.80-5,189.34-1,381.20

Finding the Fourth Proportional to 3,461.80, 5,189.34 and 1,381.20

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Solution

The fourth proportional to 3,461.80, 5,189.34 and 1,381.20 is: 2,070.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,461.80 : 5,189.34 = 1,381.20 : x
  2. Step 2: Convert to fraction form
    3,461.80/5,189.34 = 1,381.20/x
  3. Step 3: Cross multiply
    3,461.80x = 5,189.34 × 1,381.20
  4. Step 4: Simplify right side
    3,461.80x = 7,167,516.41
  5. Step 5: Solve for x
    x = 7,167,516.41/3,461.80
  6. Step 6: Final answer
    x = 2,070.46

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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.