Home / 7,911.44-11,867.96-2,985.22

Finding the Fourth Proportional to 7,911.44, 11,867.96 and 2,985.22

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Solution

The fourth proportional to 7,911.44, 11,867.96 and 2,985.22 is: 4,478.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.44 : 11,867.96 = 2,985.22 : x
  2. Step 2: Convert to fraction form
    7,911.44/11,867.96 = 2,985.22/x
  3. Step 3: Cross multiply
    7,911.44x = 11,867.96 × 2,985.22
  4. Step 4: Simplify right side
    7,911.44x = 35,428,449.34
  5. Step 5: Solve for x
    x = 35,428,449.34/7,911.44
  6. Step 6: Final answer
    x = 4,478.13

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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.