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Finding the Fourth Proportional to 3,580.71, 5,370.03 and 1,240.62

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Solution

The fourth proportional to 3,580.71, 5,370.03 and 1,240.62 is: 1,860.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.71 : 5,370.03 = 1,240.62 : x
  2. Step 2: Convert to fraction form
    3,580.71/5,370.03 = 1,240.62/x
  3. Step 3: Cross multiply
    3,580.71x = 5,370.03 × 1,240.62
  4. Step 4: Simplify right side
    3,580.71x = 6,662,166.62
  5. Step 5: Solve for x
    x = 6,662,166.62/3,580.71
  6. Step 6: Final answer
    x = 1,860.57

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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.