Home / 7,181.60-10,780.40-3,717.92

Finding the Fourth Proportional to 7,181.60, 10,780.40 and 3,717.92

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Solution

The fourth proportional to 7,181.60, 10,780.40 and 3,717.92 is: 5,581.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.60 : 10,780.40 = 3,717.92 : x
  2. Step 2: Convert to fraction form
    7,181.60/10,780.40 = 3,717.92/x
  3. Step 3: Cross multiply
    7,181.60x = 10,780.40 × 3,717.92
  4. Step 4: Simplify right side
    7,181.60x = 40,080,664.77
  5. Step 5: Solve for x
    x = 40,080,664.77/7,181.60
  6. Step 6: Final answer
    x = 5,581.02

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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.