Home / 7,985.97-11,980.31-4,474.47

Finding the Fourth Proportional to 7,985.97, 11,980.31 and 4,474.47

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Solution

The fourth proportional to 7,985.97, 11,980.31 and 4,474.47 is: 6,712.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.97 : 11,980.31 = 4,474.47 : x
  2. Step 2: Convert to fraction form
    7,985.97/11,980.31 = 4,474.47/x
  3. Step 3: Cross multiply
    7,985.97x = 11,980.31 × 4,474.47
  4. Step 4: Simplify right side
    7,985.97x = 53,605,537.69
  5. Step 5: Solve for x
    x = 53,605,537.69/7,985.97
  6. Step 6: Final answer
    x = 6,712.46

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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.