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Finding the Fourth Proportional to 9,359.44, 12,920.90 and 6,838.72

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Solution

The fourth proportional to 9,359.44, 12,920.90 and 6,838.72 is: 9,440.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,359.44 : 12,920.90 = 6,838.72 : x
  2. Step 2: Convert to fraction form
    9,359.44/12,920.90 = 6,838.72/x
  3. Step 3: Cross multiply
    9,359.44x = 12,920.90 × 6,838.72
  4. Step 4: Simplify right side
    9,359.44x = 88,362,417.25
  5. Step 5: Solve for x
    x = 88,362,417.25/9,359.44
  6. Step 6: Final answer
    x = 9,440.99

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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.