Home / 6,688.70-10,023.45-4,919.90

Finding the Fourth Proportional to 6,688.70, 10,023.45 and 4,919.90

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Solution

The fourth proportional to 6,688.70, 10,023.45 and 4,919.90 is: 7,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,688.70 : 10,023.45 = 4,919.90 : x
  2. Step 2: Convert to fraction form
    6,688.70/10,023.45 = 4,919.90/x
  3. Step 3: Cross multiply
    6,688.70x = 10,023.45 × 4,919.90
  4. Step 4: Simplify right side
    6,688.70x = 49,314,371.66
  5. Step 5: Solve for x
    x = 49,314,371.66/6,688.70
  6. Step 6: Final answer
    x = 7,372.79

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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.