Home / 7,988.40-11,023.96-4,451.92

Finding the Fourth Proportional to 7,988.40, 11,023.96 and 4,451.92

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Solution

The fourth proportional to 7,988.40, 11,023.96 and 4,451.92 is: 6,143.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.40 : 11,023.96 = 4,451.92 : x
  2. Step 2: Convert to fraction form
    7,988.40/11,023.96 = 4,451.92/x
  3. Step 3: Cross multiply
    7,988.40x = 11,023.96 × 4,451.92
  4. Step 4: Simplify right side
    7,988.40x = 49,077,788.00
  5. Step 5: Solve for x
    x = 49,077,788.00/7,988.40
  6. Step 6: Final answer
    x = 6,143.63

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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.