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Finding the Fourth Proportional to 2,985, 4,479.09 and 1,754.80

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Solution

The fourth proportional to 2,985, 4,479.09 and 1,754.80 is: 2,633.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985 : 4,479.09 = 1,754.80 : x
  2. Step 2: Convert to fraction form
    2,985/4,479.09 = 1,754.80/x
  3. Step 3: Cross multiply
    2,985x = 4,479.09 × 1,754.80
  4. Step 4: Simplify right side
    2,985x = 7,859,907.13
  5. Step 5: Solve for x
    x = 7,859,907.13/2,985
  6. Step 6: Final answer
    x = 2,633.13

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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.