Home / 2,420.26-3,630.40-665.29

Finding the Fourth Proportional to 2,420.26, 3,630.40 and 665.29

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Solution

The fourth proportional to 2,420.26, 3,630.40 and 665.29 is: 997.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.26 : 3,630.40 = 665.29 : x
  2. Step 2: Convert to fraction form
    2,420.26/3,630.40 = 665.29/x
  3. Step 3: Cross multiply
    2,420.26x = 3,630.40 × 665.29
  4. Step 4: Simplify right side
    2,420.26x = 2,415,247.34
  5. Step 5: Solve for x
    x = 2,415,247.34/2,420.26
  6. Step 6: Final answer
    x = 997.93

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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.