Home / 7,987.96-11,023.61-4,451.40

Finding the Fourth Proportional to 7,987.96, 11,023.61 and 4,451.40

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Solution

The fourth proportional to 7,987.96, 11,023.61 and 4,451.40 is: 6,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.96 : 11,023.61 = 4,451.40 : x
  2. Step 2: Convert to fraction form
    7,987.96/11,023.61 = 4,451.40/x
  3. Step 3: Cross multiply
    7,987.96x = 11,023.61 × 4,451.40
  4. Step 4: Simplify right side
    7,987.96x = 49,070,456.81
  5. Step 5: Solve for x
    x = 49,070,456.81/7,987.96
  6. Step 6: Final answer
    x = 6,143.05

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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.