Home / 6,665.18-9,999.48-1,985.24

Finding the Fourth Proportional to 6,665.18, 9,999.48 and 1,985.24

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Solution

The fourth proportional to 6,665.18, 9,999.48 and 1,985.24 is: 2,978.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.18 : 9,999.48 = 1,985.24 : x
  2. Step 2: Convert to fraction form
    6,665.18/9,999.48 = 1,985.24/x
  3. Step 3: Cross multiply
    6,665.18x = 9,999.48 × 1,985.24
  4. Step 4: Simplify right side
    6,665.18x = 19,851,367.68
  5. Step 5: Solve for x
    x = 19,851,367.68/6,665.18
  6. Step 6: Final answer
    x = 2,978.37

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1.5x scale

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.