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Finding the Fourth Proportional to 7,970.25, 11,871.18 and 7,553.91

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Solution

The fourth proportional to 7,970.25, 11,871.18 and 7,553.91 is: 11,251.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,970.25 : 11,871.18 = 7,553.91 : x
  2. Step 2: Convert to fraction form
    7,970.25/11,871.18 = 7,553.91/x
  3. Step 3: Cross multiply
    7,970.25x = 11,871.18 × 7,553.91
  4. Step 4: Simplify right side
    7,970.25x = 89,673,825.31
  5. Step 5: Solve for x
    x = 89,673,825.31/7,970.25
  6. Step 6: Final answer
    x = 11,251.07

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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.