Home / 7,130.40-10,676.16-3,660.72

Finding the Fourth Proportional to 7,130.40, 10,676.16 and 3,660.72

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Solution

The fourth proportional to 7,130.40, 10,676.16 and 3,660.72 is: 5,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.40 : 10,676.16 = 3,660.72 : x
  2. Step 2: Convert to fraction form
    7,130.40/10,676.16 = 3,660.72/x
  3. Step 3: Cross multiply
    7,130.40x = 10,676.16 × 3,660.72
  4. Step 4: Simplify right side
    7,130.40x = 39,082,432.44
  5. Step 5: Solve for x
    x = 39,082,432.44/7,130.40
  6. Step 6: Final answer
    x = 5,481.10

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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.