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Finding the Fourth Proportional to 3,069.43, 4,603.17 and 988.98

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Solution

The fourth proportional to 3,069.43, 4,603.17 and 988.98 is: 1,483.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,069.43 : 4,603.17 = 988.98 : x
  2. Step 2: Convert to fraction form
    3,069.43/4,603.17 = 988.98/x
  3. Step 3: Cross multiply
    3,069.43x = 4,603.17 × 988.98
  4. Step 4: Simplify right side
    3,069.43x = 4,552,449.84
  5. Step 5: Solve for x
    x = 4,552,449.84/3,069.43
  6. Step 6: Final answer
    x = 1,483.16

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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.