Home / 7,988.28-11,023.38-4,451.43

Finding the Fourth Proportional to 7,988.28, 11,023.38 and 4,451.43

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Solution

The fourth proportional to 7,988.28, 11,023.38 and 4,451.43 is: 6,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.28 : 11,023.38 = 4,451.43 : x
  2. Step 2: Convert to fraction form
    7,988.28/11,023.38 = 4,451.43/x
  3. Step 3: Cross multiply
    7,988.28x = 11,023.38 × 4,451.43
  4. Step 4: Simplify right side
    7,988.28x = 49,069,804.43
  5. Step 5: Solve for x
    x = 49,069,804.43/7,988.28
  6. Step 6: Final answer
    x = 6,142.72

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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.