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Finding the Fourth Proportional to 8,030.40, 12,040.20 and 3,645.60

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Solution

The fourth proportional to 8,030.40, 12,040.20 and 3,645.60 is: 5,465.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,030.40 : 12,040.20 = 3,645.60 : x
  2. Step 2: Convert to fraction form
    8,030.40/12,040.20 = 3,645.60/x
  3. Step 3: Cross multiply
    8,030.40x = 12,040.20 × 3,645.60
  4. Step 4: Simplify right side
    8,030.40x = 43,893,753.12
  5. Step 5: Solve for x
    x = 43,893,753.12/8,030.40
  6. Step 6: Final answer
    x = 5,465.95

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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.