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Finding the Fourth Proportional to 9,362.61, 12,915.96 and 6,338.84

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Solution

The fourth proportional to 9,362.61, 12,915.96 and 6,338.84 is: 8,744.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.61 : 12,915.96 = 6,338.84 : x
  2. Step 2: Convert to fraction form
    9,362.61/12,915.96 = 6,338.84/x
  3. Step 3: Cross multiply
    9,362.61x = 12,915.96 × 6,338.84
  4. Step 4: Simplify right side
    9,362.61x = 81,872,139.31
  5. Step 5: Solve for x
    x = 81,872,139.31/9,362.61
  6. Step 6: Final answer
    x = 8,744.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.