Home / 7,811.35-11,718.05-2,884.45

Finding the Fourth Proportional to 7,811.35, 11,718.05 and 2,884.45

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Solution

The fourth proportional to 7,811.35, 11,718.05 and 2,884.45 is: 4,327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.35 : 11,718.05 = 2,884.45 : x
  2. Step 2: Convert to fraction form
    7,811.35/11,718.05 = 2,884.45/x
  3. Step 3: Cross multiply
    7,811.35x = 11,718.05 × 2,884.45
  4. Step 4: Simplify right side
    7,811.35x = 33,800,129.32
  5. Step 5: Solve for x
    x = 33,800,129.32/7,811.35
  6. Step 6: Final answer
    x = 4,327.05

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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.