Home / 3,639.78-5,459.63-1,042.70

Finding the Fourth Proportional to 3,639.78, 5,459.63 and 1,042.70

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Solution

The fourth proportional to 3,639.78, 5,459.63 and 1,042.70 is: 1,564.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.78 : 5,459.63 = 1,042.70 : x
  2. Step 2: Convert to fraction form
    3,639.78/5,459.63 = 1,042.70/x
  3. Step 3: Cross multiply
    3,639.78x = 5,459.63 × 1,042.70
  4. Step 4: Simplify right side
    3,639.78x = 5,692,723.69
  5. Step 5: Solve for x
    x = 5,692,723.69/3,639.78
  6. Step 6: Final answer
    x = 1,564.03

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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.