Home / 7,985.72-11,020.38-4,449.14

Finding the Fourth Proportional to 7,985.72, 11,020.38 and 4,449.14

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Solution

The fourth proportional to 7,985.72, 11,020.38 and 4,449.14 is: 6,139.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.72 : 11,020.38 = 4,449.14 : x
  2. Step 2: Convert to fraction form
    7,985.72/11,020.38 = 4,449.14/x
  3. Step 3: Cross multiply
    7,985.72x = 11,020.38 × 4,449.14
  4. Step 4: Simplify right side
    7,985.72x = 49,031,213.47
  5. Step 5: Solve for x
    x = 49,031,213.47/7,985.72
  6. Step 6: Final answer
    x = 6,139.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.