Home / 6,459.70-9,690.45-2,761.90

Finding the Fourth Proportional to 6,459.70, 9,690.45 and 2,761.90

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Solution

The fourth proportional to 6,459.70, 9,690.45 and 2,761.90 is: 4,143.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,459.70 : 9,690.45 = 2,761.90 : x
  2. Step 2: Convert to fraction form
    6,459.70/9,690.45 = 2,761.90/x
  3. Step 3: Cross multiply
    6,459.70x = 9,690.45 × 2,761.90
  4. Step 4: Simplify right side
    6,459.70x = 26,764,053.86
  5. Step 5: Solve for x
    x = 26,764,053.86/6,459.70
  6. Step 6: Final answer
    x = 4,143.23

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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.