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Finding the Fourth Proportional to 5,985.99, 8,978.18 and 1,603.49

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Solution

The fourth proportional to 5,985.99, 8,978.18 and 1,603.49 is: 2,405.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,985.99 : 8,978.18 = 1,603.49 : x
  2. Step 2: Convert to fraction form
    5,985.99/8,978.18 = 1,603.49/x
  3. Step 3: Cross multiply
    5,985.99x = 8,978.18 × 1,603.49
  4. Step 4: Simplify right side
    5,985.99x = 14,396,368.94
  5. Step 5: Solve for x
    x = 14,396,368.94/5,985.99
  6. Step 6: Final answer
    x = 2,405.01

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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.