Home / 6,490.21-9,719.70-3,708.46

Finding the Fourth Proportional to 6,490.21, 9,719.70 and 3,708.46

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Solution

The fourth proportional to 6,490.21, 9,719.70 and 3,708.46 is: 5,553.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490.21 : 9,719.70 = 3,708.46 : x
  2. Step 2: Convert to fraction form
    6,490.21/9,719.70 = 3,708.46/x
  3. Step 3: Cross multiply
    6,490.21x = 9,719.70 × 3,708.46
  4. Step 4: Simplify right side
    6,490.21x = 36,045,118.66
  5. Step 5: Solve for x
    x = 36,045,118.66/6,490.21
  6. Step 6: Final answer
    x = 5,553.77

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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.