Home / 3,720.14-5,580.05-1,639.59

Finding the Fourth Proportional to 3,720.14, 5,580.05 and 1,639.59

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Solution

The fourth proportional to 3,720.14, 5,580.05 and 1,639.59 is: 2,459.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.14 : 5,580.05 = 1,639.59 : x
  2. Step 2: Convert to fraction form
    3,720.14/5,580.05 = 1,639.59/x
  3. Step 3: Cross multiply
    3,720.14x = 5,580.05 × 1,639.59
  4. Step 4: Simplify right side
    3,720.14x = 9,148,985.98
  5. Step 5: Solve for x
    x = 9,148,985.98/3,720.14
  6. Step 6: Final answer
    x = 2,459.31

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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.