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Finding the Fourth Proportional to 7,689.54, 11,476.79 and 7,073.94

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Solution

The fourth proportional to 7,689.54, 11,476.79 and 7,073.94 is: 10,557.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.54 : 11,476.79 = 7,073.94 : x
  2. Step 2: Convert to fraction form
    7,689.54/11,476.79 = 7,073.94/x
  3. Step 3: Cross multiply
    7,689.54x = 11,476.79 × 7,073.94
  4. Step 4: Simplify right side
    7,689.54x = 81,186,088.48
  5. Step 5: Solve for x
    x = 81,186,088.48/7,689.54
  6. Step 6: Final answer
    x = 10,557.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.