Home / 6,619.64-9,929.46-2,719.76

Finding the Fourth Proportional to 6,619.64, 9,929.46 and 2,719.76

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Solution

The fourth proportional to 6,619.64, 9,929.46 and 2,719.76 is: 4,079.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.64 : 9,929.46 = 2,719.76 : x
  2. Step 2: Convert to fraction form
    6,619.64/9,929.46 = 2,719.76/x
  3. Step 3: Cross multiply
    6,619.64x = 9,929.46 × 2,719.76
  4. Step 4: Simplify right side
    6,619.64x = 27,005,748.13
  5. Step 5: Solve for x
    x = 27,005,748.13/6,619.64
  6. Step 6: Final answer
    x = 4,079.64

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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.