Home / 5,290.70-7,938.75-2,173.10

Finding the Fourth Proportional to 5,290.70, 7,938.75 and 2,173.10

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Solution

The fourth proportional to 5,290.70, 7,938.75 and 2,173.10 is: 3,260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.70 : 7,938.75 = 2,173.10 : x
  2. Step 2: Convert to fraction form
    5,290.70/7,938.75 = 2,173.10/x
  3. Step 3: Cross multiply
    5,290.70x = 7,938.75 × 2,173.10
  4. Step 4: Simplify right side
    5,290.70x = 17,251,697.63
  5. Step 5: Solve for x
    x = 17,251,697.63/5,290.70
  6. Step 6: Final answer
    x = 3,260.76

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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.