Home / 6,666.08-9,999.16-1,985.96

Finding the Fourth Proportional to 6,666.08, 9,999.16 and 1,985.96

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Solution

The fourth proportional to 6,666.08, 9,999.16 and 1,985.96 is: 2,978.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,666.08 : 9,999.16 = 1,985.96 : x
  2. Step 2: Convert to fraction form
    6,666.08/9,999.16 = 1,985.96/x
  3. Step 3: Cross multiply
    6,666.08x = 9,999.16 × 1,985.96
  4. Step 4: Simplify right side
    6,666.08x = 19,857,951.83
  5. Step 5: Solve for x
    x = 19,857,951.83/6,666.08
  6. Step 6: Final answer
    x = 2,978.96

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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.