Home / 7,987.28-11,981.93-4,284.43

Finding the Fourth Proportional to 7,987.28, 11,981.93 and 4,284.43

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Solution

The fourth proportional to 7,987.28, 11,981.93 and 4,284.43 is: 6,427.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.28 : 11,981.93 = 4,284.43 : x
  2. Step 2: Convert to fraction form
    7,987.28/11,981.93 = 4,284.43/x
  3. Step 3: Cross multiply
    7,987.28x = 11,981.93 × 4,284.43
  4. Step 4: Simplify right side
    7,987.28x = 51,335,688.97
  5. Step 5: Solve for x
    x = 51,335,688.97/7,987.28
  6. Step 6: Final answer
    x = 6,427.18

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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.