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Finding the Fourth Proportional to 5,418, 7,476.80 and 3,060.08

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Solution

The fourth proportional to 5,418, 7,476.80 and 3,060.08 is: 4,222.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418 : 7,476.80 = 3,060.08 : x
  2. Step 2: Convert to fraction form
    5,418/7,476.80 = 3,060.08/x
  3. Step 3: Cross multiply
    5,418x = 7,476.80 × 3,060.08
  4. Step 4: Simplify right side
    5,418x = 22,879,606.14
  5. Step 5: Solve for x
    x = 22,879,606.14/5,418
  6. Step 6: Final answer
    x = 4,222.89

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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.