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Finding the Fourth Proportional to 7,660.10, 11,480.42 and 3,955.16

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Solution

The fourth proportional to 7,660.10, 11,480.42 and 3,955.16 is: 5,927.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,660.10 : 11,480.42 = 3,955.16 : x
  2. Step 2: Convert to fraction form
    7,660.10/11,480.42 = 3,955.16/x
  3. Step 3: Cross multiply
    7,660.10x = 11,480.42 × 3,955.16
  4. Step 4: Simplify right side
    7,660.10x = 45,406,897.97
  5. Step 5: Solve for x
    x = 45,406,897.97/7,660.10
  6. Step 6: Final answer
    x = 5,927.72

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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.