Home / 7,980.66-11,028.47-5,987.75

Finding the Fourth Proportional to 7,980.66, 11,028.47 and 5,987.75

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Solution

The fourth proportional to 7,980.66, 11,028.47 and 5,987.75 is: 8,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.66 : 11,028.47 = 5,987.75 : x
  2. Step 2: Convert to fraction form
    7,980.66/11,028.47 = 5,987.75/x
  3. Step 3: Cross multiply
    7,980.66x = 11,028.47 × 5,987.75
  4. Step 4: Simplify right side
    7,980.66x = 66,035,636.16
  5. Step 5: Solve for x
    x = 66,035,636.16/7,980.66
  6. Step 6: Final answer
    x = 8,274.46

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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.