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Finding the Fourth Proportional to 10,860, 16,290 and 3,069.02

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Solution

The fourth proportional to 10,860, 16,290 and 3,069.02 is: 4,603.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860 : 16,290 = 3,069.02 : x
  2. Step 2: Convert to fraction form
    10,860/16,290 = 3,069.02/x
  3. Step 3: Cross multiply
    10,860x = 16,290 × 3,069.02
  4. Step 4: Simplify right side
    10,860x = 49,994,254.35
  5. Step 5: Solve for x
    x = 49,994,254.35/10,860
  6. Step 6: Final answer
    x = 4,603.52

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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.