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Finding the Fourth Proportional to 6,387.90, 9,582.30 and 3,615.90

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Solution

The fourth proportional to 6,387.90, 9,582.30 and 3,615.90 is: 5,424.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.90 : 9,582.30 = 3,615.90 : x
  2. Step 2: Convert to fraction form
    6,387.90/9,582.30 = 3,615.90/x
  3. Step 3: Cross multiply
    6,387.90x = 9,582.30 × 3,615.90
  4. Step 4: Simplify right side
    6,387.90x = 34,648,638.57
  5. Step 5: Solve for x
    x = 34,648,638.57/6,387.90
  6. Step 6: Final answer
    x = 5,424.10

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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.