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Finding the Fourth Proportional to 6,317, 9,478.38 and 2,421.08

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Solution

The fourth proportional to 6,317, 9,478.38 and 2,421.08 is: 3,632.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,317 : 9,478.38 = 2,421.08 : x
  2. Step 2: Convert to fraction form
    6,317/9,478.38 = 2,421.08/x
  3. Step 3: Cross multiply
    6,317x = 9,478.38 × 2,421.08
  4. Step 4: Simplify right side
    6,317x = 22,947,916.25
  5. Step 5: Solve for x
    x = 22,947,916.25/6,317
  6. Step 6: Final answer
    x = 3,632.72

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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.