Home / 6,919.64-10,372.68-2,758.40

Finding the Fourth Proportional to 6,919.64, 10,372.68 and 2,758.40

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Solution

The fourth proportional to 6,919.64, 10,372.68 and 2,758.40 is: 4,134.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.64 : 10,372.68 = 2,758.40 : x
  2. Step 2: Convert to fraction form
    6,919.64/10,372.68 = 2,758.40/x
  3. Step 3: Cross multiply
    6,919.64x = 10,372.68 × 2,758.40
  4. Step 4: Simplify right side
    6,919.64x = 28,612,000.51
  5. Step 5: Solve for x
    x = 28,612,000.51/6,919.64
  6. Step 6: Final answer
    x = 4,134.90

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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.