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Finding the Fourth Proportional to 7,914.17, 10,945.13 and 7,073.55

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Solution

The fourth proportional to 7,914.17, 10,945.13 and 7,073.55 is: 9,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,914.17 : 10,945.13 = 7,073.55 : x
  2. Step 2: Convert to fraction form
    7,914.17/10,945.13 = 7,073.55/x
  3. Step 3: Cross multiply
    7,914.17x = 10,945.13 × 7,073.55
  4. Step 4: Simplify right side
    7,914.17x = 77,420,888.94
  5. Step 5: Solve for x
    x = 77,420,888.94/7,914.17
  6. Step 6: Final answer
    x = 9,782.56

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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.