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Finding the Fourth Proportional to 6,602.92, 9,904.14 and 1,985.80

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Solution

The fourth proportional to 6,602.92, 9,904.14 and 1,985.80 is: 2,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,602.92 : 9,904.14 = 1,985.80 : x
  2. Step 2: Convert to fraction form
    6,602.92/9,904.14 = 1,985.80/x
  3. Step 3: Cross multiply
    6,602.92x = 9,904.14 × 1,985.80
  4. Step 4: Simplify right side
    6,602.92x = 19,667,641.21
  5. Step 5: Solve for x
    x = 19,667,641.21/6,602.92
  6. Step 6: Final answer
    x = 2,978.63

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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.