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Finding the Fourth Proportional to 9,940.79, 14,911.65 and 5,554.91

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Solution

The fourth proportional to 9,940.79, 14,911.65 and 5,554.91 is: 8,332.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.79 : 14,911.65 = 5,554.91 : x
  2. Step 2: Convert to fraction form
    9,940.79/14,911.65 = 5,554.91/x
  3. Step 3: Cross multiply
    9,940.79x = 14,911.65 × 5,554.91
  4. Step 4: Simplify right side
    9,940.79x = 82,832,799.14
  5. Step 5: Solve for x
    x = 82,832,799.14/9,940.79
  6. Step 6: Final answer
    x = 8,332.62

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1.5x scale

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.