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Finding the Fourth Proportional to 6,276.40, 9,403.80 and 2,982.40

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Solution

The fourth proportional to 6,276.40, 9,403.80 and 2,982.40 is: 4,468.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,276.40 : 9,403.80 = 2,982.40 : x
  2. Step 2: Convert to fraction form
    6,276.40/9,403.80 = 2,982.40/x
  3. Step 3: Cross multiply
    6,276.40x = 9,403.80 × 2,982.40
  4. Step 4: Simplify right side
    6,276.40x = 28,045,893.12
  5. Step 5: Solve for x
    x = 28,045,893.12/6,276.40
  6. Step 6: Final answer
    x = 4,468.47

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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.