Home / 7,986.07-11,020.05-4,449.20

Finding the Fourth Proportional to 7,986.07, 11,020.05 and 4,449.20

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Solution

The fourth proportional to 7,986.07, 11,020.05 and 4,449.20 is: 6,139.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.07 : 11,020.05 = 4,449.20 : x
  2. Step 2: Convert to fraction form
    7,986.07/11,020.05 = 4,449.20/x
  3. Step 3: Cross multiply
    7,986.07x = 11,020.05 × 4,449.20
  4. Step 4: Simplify right side
    7,986.07x = 49,030,406.46
  5. Step 5: Solve for x
    x = 49,030,406.46/7,986.07
  6. Step 6: Final answer
    x = 6,139.49

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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.